• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/280

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

280 Cards in this Set

  • Front
  • Back
Lymph system function
-Carry proteins and fluids (that have leaked out of capillaries) back to the veins

-Absorb fats from the small intestine and bring them back to the blood stream


-Defend the body against foreign organisms:


-Lymphocytes produce antibodies


-Monocytes attack foreign cells and bacteria

What organs make up the Lymph system
-organs, lymph nodes, lymph ducts, lymph vessels move lymph to veins

-Includes tonsils, adenoids, spleen, thymus


-Major part of body's immune system

Lymph fluid
-flows out of capillary walls to bathe the body tissues

-carries oxygen to cells, carries waste away (CO2)


-contains white blood cells


-lymph vessels carry lymph away to the lymph duct to be drained so lymph nodes aren't swollen

Lymph facts
-Lymph is the fluid that filters out of capillaries into the spaces between the cells

-fluid that surrounds body cells is called interstitial fluid


-lymph is similar to blood (leukocytes, water, sugar, metabolic wastes but doesn't contain erythrocytes, platelets, and has less protein than blood

Lymph vessels
-have thicker walls than capillaries

-contain valves so lymph flows in one direction toward duct (thoracic)


-all vessels empty into left thoracic duct and right lymphatic duct--ducts carry lymph into large veins in the neck where lymph enters bloodstream

Lymph node
-mass of lymph cells and vessels surrounded by a fibrous connective tissue capsule

-produce lymphocytes, filter lymph, and trap substances from infections and inflammations


-makes immune cells to help fight off infections


-when bacteria is detected in lymph, lymph nodes make more lymphocytes--causing them to swell


-remove foreign material like cancer cells and bacteria





Chyle
fluid from intestines--contains proteins and fats
B Cells,

T Cells

B Cells- produce antibodies

T Cells- attack bacteria and foreign cells

Lymph node locations
-inguinal, cervical, axillary, mediastinal


Spleen
-aging erythrocytes are destroyed here by macrophages

-Bacteria and foreign materials are filtered here from blood


-B cells are activated by antigens to produce antibodies and T cells are activated to attach to foreign materials



Thymus
important in developing an effective immune system in childhood
Immune System
-defends body against foreign substances (toxins, bacteria, foreign RBCs)

-Includes WBCs (neutrophils, monocytes, macrophages) that are phagocytes found in blood and tissue


-Lymphoid organs: spleen, thymus, lymph nodes and their products (antibodies and lymphocytes)

Antigen

Pathogen

substance that body recognizes as foreign



-any virus/bacteria/substance that causes disease

Immunity
protection against diseases--natural and acquired immunity
Natural Immunity
-innate

-genetic predisposition


-phagocytes


-macrophages


-NK cells

Acquired Immunity

-development of antibodies against antigens

Active: vaccination, transfer of immune cells from a donor, having an infection



Passive: maternal antibodies, immunoglobulin, antitoxins

Phagocytosis
cellular eating and destroying substances--usually by neutrophils and macrophages
Lymphaden/o
lymph node (gland)
Immun/o
immune, protection
tox/o
poison
Ana-
again, anew
-edema
swelling
-phylaxis
protection

Immunodeficiency (Pathology)

-severe combined immunodeficiency disease


-group of rare, sometimes congenital disorders characterized by little or no immune response


-defect in B and T-lymphocytes


-bubble boy disease


-susceptible to infections


-Treatments: bone marrow, stem cell transplant

Acquired Immunodeficiency Disease (Pathology)

-caused by the human immunodeficiency virus (HIV)


-symptoms and signs that indicate a suppressed immune system


-AIDS is characterized as infections, secondary neoplasms, and neurologic problems


-Ex: Kaposi sarcoma and lymphoma


-NO CURE: but medications can slow it down


*Sexually transmitted infection


-protease inhibitors are used to treat AIDS

Hypersensitivity (Allergy)

-abnormal hypersensitivity acquired by exposure to an antigen

-Sensitized person: person who was recently exposed to allergen reacts to a subsequent exposure


-mild to severe (anaphylaxis)


Lymphoma

-malignant tumor of lymph nodes and tissue


-Hodgkin lymphoma (formerly called disease)--malig tumor of the spleen's lymphoid tissue and lymph nodes


-lymphadenopathy, splenomegaly, weakness, loss of appetite


-Diagnosis made when Reed-Sternberg cells are found in the lymph nodes


-high cure rate (chem, radiation, stem cell)


*Caused when there's a DNA mutation in B cells--they live past their prime and stay in lymph node. they overcrowd the area and cause signs/symptoms



Stage 1 Lymphoma

Cancer found in one or more lymph nodes in one lymph node group (thymus, spleen)


-Waldeyer's ring

Stage 2 Lymphoma

cancer found in two or more lymph nodes below OR above the diaphragm

Stage 3 Lymphoma

cancer found in one or more lymph nodes below AND above diaphragm

Stage 4 Lymphoma

Cancer found outside the lymph nodes throughout one or more organs


-in lungs, bone marrow, or spread to lymph nodes far away from that organ

Lymphoma (Non Hodgkin)

malignant tumor originates in the lymphocytes


-more common than Hodgkin lymphoma


-Ex: follicular lymphoma (collection of lymphocytes in a follicle or nodule)


-Ex: large cell lymphoma: large lymphocytes that infiltrate nodes and tissues


-Medicines used for treatment can suppress immune system

Malignant Myeloma

-Malignant tumor of bone marrow cells (composed of plasma cells)


-high levels of one of the specific immunoglobulins (IgG)


-Symptoms: hypercalcemia (causes excessive thirst, nausea, constipation, confusion)


-kidney failure


-fatigue


-bone damage and fractures (osteolytic/lytic)--appears as punched out spots on X-rays (back, pelvis, skull)


-myeloma cells replace oxygen carrying cells in bone marrow


-treatment: chemo, bone marrow transplant, radiation

Thyoma

-malignant tumor of the thymus gland


-grows slowly


-rarely spreads to areas beyond thymus


-patients with thyoma usually have autoimmune disorder (myasthenia gravis, lupus, rheumatoid arthritis)

Edema

-accummulation of excess fluid in intercellular space--can be caused by lymph vessel blockage

Pitting Edema

-edema


-when you press on skin, an indent remains

Elephantitis

-edema of lower extremities due to blockage of lymph vessels


-caused by filarial worms (filariae)


-filariae: small parasitic worms that travel through mosquitoes. they invade tissues as embryos and block lymph vessels when they grow

Vaccination

-administration of weakened or killed pathogen, or protein of pathogen, so body can produce antibodies against it for future protection

Immunosuppression

-usually prescribed for autoimmune disorders


-use of chemotherapy or immunosuppressants to interfere with immune system

Tolerance

recognizing and accepting body's own antigens as self


-ability for body to fight off infections/antigens before getting sick

Autoimmunity

when one's immune system attacks its own tissues and cells

Hypersensitive

exaggerated response to a stimulus

rejection

immunologic response of incompatibility to a transplanted organ or tissue

Systemic

body as a whole

Virulent

extremely toxic pathogen

Immunoelectrophoresis

-test that measures immunoglobulins in the blood


-immunoglobulins are separated by charge-to-mass rations


-

ELISA (enzyme linked immunosorbent assay)

-lab test


-a screening that tests for HIV antibodies in blood

Western blot

-lab test that confirms for HIV antibodies

CD4+ Cell Count

-measures the CD4 T cells (T helper cell) count in the blood of patients with AIDS


-HIV uses CD4 receptor to latch on to T cell and infect it

Blood System functions

-transport nutrients, gases, and wastes to and from the cells in body


-transport hormones from secretion sites to other areas


-Protection: transport WBCs and platelets

Blood Composition

-45% formed elements (cells)--erythrocytes RBCs to carry oxygen, leukocytes (WBCs) for immunity, platelets/thrombocytes (clotting--hemostasis), 55% is liquid/plasma--water, dissolved proteins, sugars, wastes, salts, hormones


-45% formed elements, 55% plasma


-plasma is 91% water, proteins 7%, other solutes 2%

Blood Component Count

-Platelets: 250-400 thousand


WBC: 5-9 thousand


RBC: 4.2-6.2 million

Blood cell formation

-all blood cells originate in bone marrow


-stem cells undergo process of differentiation

Hematopoiesis

-formation of blood cells


-hemocytoblast->blast->cyte

Erythrocytes

-during maturation, loses nucleus and forms bioconcave shape


-contains hemoglobin (heme: iron containing pigment, globin: protein)--enables erythrocyte to carry oxygen


-oxygen + hemoglobin=red color

Erythropoietin

-secreted by the kidney


-stimulates the production of erythrocytes


-life span of blood cell: 120 days


-two to ten mill blood cells are destroyed every second


-macrophages break them down

Breakdown of hemoglobin

-broken down by macrophages


-Heme->bilirubin, iron-> excreted by liver in bile, reused or stored in liver, spleen, bone marrow


-Globin-> protein

Leukocytes

-white blood cells


-5 types of mature leukocytes:


-Granulocytes: Basophils, Eosinophils, neutrophils


-Mononuclear cells: Monocytes, Lymphocytes

Basophils

contains histamine--is released during allergic reactions


-contains heparin (prevents clotting)


-0-1%

Eosinophils

increase in allergic reactions and engulf substances that trigger the allergic reaction


-1-4%


-phagocytic

Neutrophils

are phagocytes--accumulate at sites of infection and engulf bacteria


-50-70%

Monocytes

phagocytic cell that becomes a macrophage and fights off disease


-3-8%



Lymphocytes

make antibodies and destroy foreign antigens


20-40%



efgb

Thrombocytes or Platelets

-formed from giant cells in bone marrow called megakaryocytes


-tiny fragments break off to form platelets


-help blood clot

Coagulation

blood clotting


-complicated enzymatic cascade that ends in formation of fibrin clot


-platelets begin process


-anticogulation substances inhibit clotting when finished

Clotting factors

any of the plasma components involved in clotting

Coagulation

clotting-liquid to solid

Fibrin

-produced by fibrinogen


-elastic fibrous protein


-needed for clotting

Clotting pathway

Prothrombin->thrombin->fibrinogen->fibrin

Injury pathway

injury


-platelet aggregation


-tissue, clotting factors, calcium, prothrombin, thrombin


-fibrinogen to fibrin clot

bas/o

base, opposite of acid

chrom/o, chromat/o

color

cyt/o

cell

granul/o

granules

morph/o

shape

myel/o

bone marrow, spinal cord

path/o

disease

phag/o

eat, swallow

phleb/o

vein

plas/o

formation, development

thromb/o

clot

pro-

before, forward

-apheresis

removal

-blast

immature cell

-cytosis

sight increase in numbers


-condition of cells

-emia

blood condition

-globin, -globulin

protein

-oid

derived from, resembling

-penia

deficiency

-phage

eat, swallow

-philia

attraction for

-poiesis

formation

-rrhage

bursting forth (blood)

-sis

condition, state

-stasis

to stop, control

-y

condition, process

Hemolytic

-pertaining to the rupture or destruction of RBCs

Anemia

deficiency in erythrocytes or hemoglobin

Aplastic anemia

bone marrow doesn't produce enough RBCs


-cause is usually unknown

Pancytopenia deficiency

when stem cells don't produce enough WBCs, RBCs, platelets

Pernicious Anemia

-caused by inability to absorb Vitamin B12


-when number of RBCs does down


-causes enlargement of individual cells (macrocytes)

Iron deficiency Anemia

-most common type


-hemoglobin is unable to transport O2 due to lack of iron

Sickle Cell Anemia

Hereditary


-prevalent in black people


-Sickle shaped erythrocytes


-caused by abnormal hemoglobin (Hgb S)


-oddly shaped


-can't fit in blood vessel->infarction


-Hemolysis


-painful

Polycythemia

-increase amount of RBCs


-thick/viscous blood


-bone marrow is hyperplastic


-treatment: plebotomy, myelotoxic drugs to suppress blood cell count

Hemophilia

-inability of blood to clot due to deficiency of a clotting factor


-treatment: administer deficient factor

Thrombocytopenia

low levels of platelets in blood


-normal platelet count (140-400,000)



Autoimmune Thrombocytopenia Purpura

-body makes antibodies that destroys their platelets


-results in bruising and bleeding from mucous membranes

Petechiae

tiny hemorrhages

Ecchymoses

large scale bruise

Leukemia

-increase in number of cancerous WBCs


-malignant cells fill bone marrow and blood stream


-acute: primarily immature leukocytes


-chronic: "" mature ""

Composition of blood

45% formed elements (erythro, leuko, platelets)


55% liquid or plasma (water, salts, hormones, etc)

Formation of blood

-blood cells form in bone marrow


-stem cells undergo a process of differentiation

-apheresis

removal

-cytosis

condition of the cell; increase in numbers

-oid

derived from, resembling

-poiesis

formation

Pernicious Anemia

inability of B12 to be absorbed

Aplastic Anemia

bone marrow doesn't produce enough RBCs

-penia

deficiency

Pancytopenia

deficiency in all blood cells (erythro, leuko, platelets)

Sickle Cell Anemia

-oddly shaped


-prevalent amongst blanks


-caused by abnormal hemoglobin


-thrombosis and infarction


-hemolysis

polycythemia vera



-too many RBCs


-thick blood


-treatment: plebotomy, myelotoxic drugs to reduce cell production

Hemophilia

deficiency of clotting factor

Thrombocytopenia

low levels of platelets

Autoimmune Thrombocytopenic Purpura

body makes antibodies that destroy platelets


-results in bruising and bleeding from mucous membranes

Petechiae

small bruises

Ecchymoses

large scale bruise

Leukemia

malignant cancerous white blood cells


-malig leukocytes fill bone marrow and blood stream


-acute: primarily immature leukocytes


-chronic: prim mature leuk


treatment: chemo then blood transfusion

Mononucleosis

infectious disease


-increased numbers of leukocytes and enlarged cervical nodes


-caused by Epstein Barr Virus


-symtoms: pharyngitis, lymphadenitis, hepatomegaly splenomegaly


-mode of transmission: saliva

complete blood count

automated count of all blood cells

Erythrocyte sedimentation rate

measuring the rate at which RBCS settle at bottom of test tube


-increased rate with infection/inflammation

Hematocrit

% of RBCs in a volume of blood

RBC count

used to test number of RBCs to diagnose anemia

WBC count

to diagnose disorders, infections, monitoring treatment

Platelet count

diagnose bleeding disorders

Cross-matching

blood typing test to see compatibility between donor and recipient

Prothrombin

test of the ability for blood to clot

WBC differential count

% of total WBC count made up by different types of leukocytes

Apheresis

separation of blood into component and parts and removal of a selected part (WBCs, platelets, etc)

Blood component therapy

transfusion of specific blood components (plasma, RBCs, platelets)

Blood type A

antigen A


-anti-B



Blood type B

antigen B


-anti A

Blood type AB

antigen A and B


neither anti A or anti B

blood type O

no antigens for A or B


-anti A and anti B

Rh positive

antigens D


-no anti-D

Rh negative

No D antigen


-anti D

Autologous blood

blood donated by the same patient for the future


-usually pre-surgical

Homologous blood

blood donated by same species so a compatible recipient can use

Bone marrow aspiration

removal of a small amount of fluid and cells from inside the bone with a needle

bone marrow transplant

transfer of bone marrow from one person to another

cardiovascular system

heart and blood vessels

cardiovascular structure

heart has four chambers and valves


-heart wall has three tissue layers


heart muscle and tissues are specialized


-capillaries allow for gas exchange


-veins return blood back to the heart

capillaries

carry blood from arteries/arterioles to body cells

-arteries have endothlial cells to reduce blood clotting and promote growth of blood vessels

efg

capillarie walls are only endothelial cells in thickness


waste products pass from body cells to caps to venules

hb

superior vena cava

-brings de-oxygenated blood from body to heart


-blood comes from upper body (head and limbs)

inferior vena cava

de-oxygenated blood from lower side of body

circulation of blood

1. inferior/superior vena cava


2. right atrium


3. right ventricle


4. pulmonary artery (de-oxy)->lung caps


5. pulmonary veins (oxy)


6. left artria


7. left ventricle


8. AORTA


9. rest of body

Aorta structure

Ascending aorta is divided into separate arteries


(subclavian, brachiocephalic, common carotid)

Carotid arteries

carry oxy-gen blood to head and neck

Atrioventricular valves

between atrium and ventricle


-tricuspid (right)


-bicuspid (left)p

pulmonary valve vs. aortic valve

jnf

Septa

partitions that separate the four chambers of the heart


-interatrial septum: separates two upper chambers


-interventricular septum: separates two lower chambers

Three layers of the heart

-endocardium lines interior of the heart and heart valves


-myocardium: the middle layer (thickest layer)


-pericadium: sac that surrounds the heart

Diastole

relaxation period


-ventricle walls relax


-blood flows from the vena cava and pulmonary veins


"lubb"


-closure of tricuspid and bicuspid valves

Systole

contraction


-ventricles contract


-atria relax

angi/o, vas/o, vascul/o

vessel

ather/o

yellowish plaque

sphygm/o

pulse

steth/o

chest

thromb/o

clot

-ectasia

dilation, widening

-graphy

process of recording

-ium

tissue, structure

-stenosis

narrowing, tightening

patent

open or exposed

sphygmic

pertaining to pulse

precordial

pertaining to anterior left chest

dysrhythmia

abnormal heart rhythm

Partial heart block

failure of conduction occurs occasionally

complete heart block

no impulses reach the AV node

Flutter

rapid contractions of the atria


-symptomatic of heart disease

Fibrillation

-fast, irregular contractions of the heart

Congenital heart disease

small holes in walls between atria and ventricles


-septa are affected


-some holes close on their own while others require open heart surgery

nitroglycerin

a vasodilator that increases coronary blood flow and lower blood pressure

aspirin

used to prevent clumping of platelets

beta blockers

to lower blood pressure and lower spped and force of heart beat

artherosclerosis

buildup of plaque on the inside of artery walls

Aortic Stenosis

narrowing of the aortic valve opening

Cardiac tamponade

increase in fluid in the pericardium->compression of heart

Coarctation of the aorta

narrowing of the aorta causing hypertension, ventricular strain, and ischemia

Congestive heart failure

inefficiency of cardiac circulation causing edema and pulmonary congestion

Embolus

made up of a thrombus


-vascular blockage

Peripheral arterial disease

any disorder of arteries outside of the heart

Raynaud disease

vasoconstriction of hands and feet causing cyanosis. caused by cold temps or emotional things

Rheumatic heart disease

rheumatic fever causes valvular disease

Aneurysm

widening of an arterial wall


-usually caused by artherosclerosis and hypertension or congenital weakness in a vessel wall


-common in aorta

varicose veins

abnormally swollen and twisted veins


-usually in leg


-caused by damaged valves that don't prevent backflow of blood


-blood collects


-thrombosis may occur

creatine kinase

enzyme that is released if heart has been damaged by a heart attack


-

troponin test

proteins released when heart muscle has been damaged

C-reactive protein

a blood test used to measure the level of inflammation in the body--may indicate conditions that lead to cardiovascular disease

electrolyte panel

a blood test used to measure the ion levels


-can diagnose acid-base or pH imbalance that may cause arrhythmias, muscle damage, or death

lipid panel, lipid profile

can measure high/low blood pressure


-high density lipoprotein/or low

Arteriography

recording an artery after injection of a dye

Angioscopy

insertion of a catheter with an attached camera to visualize a structure or vessel

Doppler sonography

using sound waves to record velocity of blood flow

Echocardiography

recording the structure and function of the heart at rest and with exercise v

vascular sonography

placing ultrasound transducer at tip of a catheter within a blood vessel to assess blood flo

Holter monitoring

portable ECG that is used for 24 hrs to detect cardiac arrhythmias

Cardioversion

defibrillation


-using electricity to restore normal heart beat

Endarterectomy

removal of plaque from artery

coronary artery bypass graft

veins are grafted from leg, arm, or breast and put on the heart to supply heart with oxygenated blood

Extracorporeal circulation

blood circulates through heart-lug machine while heart is being repaired

Mitral valve prosthesis

valve replacement

-ectasis

dilation

Larynx

voice box


-air passageway between pharynx and trachea


-epiglottis covers upper region of larynx during swallowing


-glottis (vocal cords)--vibrate to produce sound

trachea

air passes from larynx to thorax

Alveolus

lined with epithelial cells to allow for gas exchange between alveolus and capillary


-erythrocytes carry oxygen to the body and CO2 to the lungs to be exhaled

pleura

double folded membrane that surrounds the lungs and lines the pleural cavity

Thorax

area between neck to diaphragm


-formed by sternum, thoracic vertebrae, and ribs

Mediastinum

area of thoracic cavity between lungs


-contains aorta, heart, esophagus, thymus, trachea

external respiration

inspiration and exhalation

Inspiration

chest expands


-diaphragm contracts

expiration

chest contracts


-diaphragm relaxes

internal respiration

exchange of gases between blood and cells

ventilation

distribution of gas into and out of lungs

apnea

temporary absence of breathingd

dyspnea

labored or difficulty in breathing

orthopnea

difficulty breathing when lying down

eupnea

normal respirations

hyperpnea

breathing that is deeper than normal

hypoxia

less than normal oxygen

anoxia

absence of oxygen

capn/o

carbon dioxide

cost/o

rib

lob/o

lobe of lung

ox/o

oxygen

phon/o

voice

phren/o

diaphragm

pneum/o

lung/air

spir/o

breathing

tel/o

complete

pan-

all

-osmia

smell

-pnea

breathing

-ptysis

spitting

-sphyxia

pulse

Dysphonia

pertaining to disorders of the voice

Pleurodynia

pertaining to pain in pleura

percussion

tapping on a surface to determine difference in density below the surface

rales (crackles)

popping or clicking--means that there's fluid in alveoli

rhonchi

rumbling sounds


-bronchi is obstructed by sputum (material expelled from bronchi, lungs, resp tract

pleural rub

friction sounds


-when pleural surfaces rub against each other

stridor

whistling sound heard during inspiration


-obstruction in pharynx or larynx

wheeze

narrowed airway (asthma)

Croup

cough and stridor (whistling when inspirating)


-acute viral infection in infants


-obstruction of larynx

Pertussis (whooping cough)

-caused by bacterium Bordtella pertussis


-acute infectious inflammation of larynx, trachea, bronchi


-highly contagious


-vaccine preventable


-coughing that ends in loud whooping inspiration

Asthma

chronic bronchial inflammation disorder with airway obstruction due to edema and excess mucous


-Symptoms: dyspnea, wheezing, coughing



Cystic fibrosis

inherited disorder of exocrine glands


-blood test to detect gene


-affects cells that produce mucous, sweat, and digestive juices


-instead of acting like lubricant, it's a plug

Emphysema

also known as chronic obstructive pulmonary disease


-alveoli are progressively destroyed


-gradually have loss of breath


-leads to increase in pulmonary artery pressure


-smoking is leading cause of emphysema


-right side of heart works harder to pump blood--right ventricular hypertrophy and heart failure

Pneumonia

acute inflammation and infection of the alveoli, which fill with pus or products of the inflammatory reaction


-alveoli gas exchange is inhibited by exudate (fluid, etc)


-INFILTRATE: fluid filled area wtihin the lungs that can be visualized on a chest X ray or CT scan

Pneumococcal pneumonia

form of pneumonia caused by bacterial species Streptococcus pneumoniae

Pulmonary abcess

collection of pus in the lungs


-bacterial infection

Pulmonary edema

air sacs and bronchioles fill with fluid

Atelectasis

Collapsed lung


-causes include blockage (tumor, secretions) of bronchus or smaller bronchial tube

Mesothelioma

malignant tumor of the pleura


-caused by asbestos exposure

Pneumothorax

air in the pleural space


-may follow trauma

acid fast bacilli (ABF) smear

test to see if bacterium for TB is present

Ventilation-perfusion scan

test used to access distribution of blood flow and ventilation through both lungs

Peak flow monitoring

monitors how well your lungs are working


-measures rate of air flow through airways


-helps manage asthma symptoms

Polysomnography

monitoring and recording normal and abnormal activity during sleep

pulse oximetry

measurement of oxygen saturation in the blood

Spirometry

measures air flow and volume of air inspired and expired by the lungs using a spirometer

Thoracoscopy

endoscopic examination of the thorax done through a small opening in the chest wall

septoplasty

surgical repair of the sinus

-tomy

incision

-stomy

opening

Endotracheal intubation

tube inserted in the larynx and trachea to establish an airway for breathing purposes

Hyperbaric Medicine

medicinal use of high barometric pressure to increase O2 content of blood and tissues