Reading...
Play button
Play button
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;
230 Cards in this Set
- Front
- Back
|
The digestive system
|
Ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder
|
|
|
Peristalsis occurs in the digestive tract
|
from the pharynx to the anus
|
|
|
The mechanical breakup of food particles in the mouth is called
|
mastication
|
|
|
The uvula is
|
a projection from the soft palate
|
|
|
Because of their location; swollen palatine tonsils may interfere with
|
both breathing and swallowing
|
|
|
Salivary amylase digests
|
carbohydrates
|
|
|
The parotid glands are
|
the largest salivary glands
|
|
|
In the swallowing reflex
|
muscles pull the pharynx upward toward the food
the epiglottis closes off the top of the trachea the tongue presses against the uvula and soft palate |
|
|
The epiglottis is attached to the
|
larynx
|
|
|
Edith suffers from severe heartburn. She goes to her physician and is diagnosed with a hiatal hernia. This condition affects her
|
diaphragm
|
|
|
Elliot thought that his peptic ulcers were caused by his nagging parents, and was surprised when the doctor handed him a prescription for medication to treat
|
a bacterial infection
|
|
|
The main part of the stomach is called the
|
body
|
|
|
Secretion of cholecystokinin from the intestinal wall is stimulated by
|
protein and fat in the small intestine
|
|
|
Acute pancreatitis is often caused by the conversion of
|
trypsinogen to trypsin
|
|
|
It is good that Emily does not remember being a newborn, because she was miserable, vomiting frequently. An X-ray revealed hypertrophic pyloric stenosis. The problem in Emily's digestive system, before surgery helped her, was
|
overgrowth of muscle that blocked the passageway from the stomach to the small intestine
|
|
|
Matthew takes a drug that inhibits the production of HCl in the stomach to ease the symptoms of a gastric ulcer. If he takes it for a long time, digestion of which nutrient would be affected the most?
|
proteins
|
|
|
Which of the following is true about bile?
|
Bile is produced by the liver
|
|
|
Which constituent of bile has a digestive function?
|
bile salts
|
|
|
David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?
|
lipids
|
|
|
The greater omentum is composed of
|
the peritoneal membrane
|
|
|
Tanisha has abdominal pains. Medical tests reveal that she can digest nutrients, but the nutrients are not taken in by the intestinal blood supply. She likely has
|
malabsorption
|
|
|
2, 4, 3, 1, 5
|
|
|
The major mixing movement in the small intestine is accomplished by
|
segmentation
|
|
|
Receptor-mediated endocytosis removes _______ molecules from plasma, delivering cholesterol to the tissues.
|
LDL
|
|
|
_______ pick up cholesterol from the peripheral tissues and return it to the liver.
|
HDLs
|
|
|
During the defecation reflex, the
|
diaphragm is lowered
|
|
|
Enlarged blood vessels of the anal columns are called
|
hemorrhoids
|
|
|
Feces contain
|
electrolytes
undigested food bacteria |
|
|
Feces are about ___ % water.
|
75
|
|
|
Changes in the mouth associated with aging include
|
thinning enamel
|
|
|
Lydia is taking an antihistamine for her allergies and develops xerostomia. She has
|
dry mouth
|
|
|
Factors that may affect the rate of absorption of certain medications with age include
|
slowing of the exit of chyme from the stomach
slowing peristalsis thinning of the stomach lining |
|
|
Bacteria causes dental caries by
|
metabolizing carbohydrates in food, producing acidic by-products that damage enamel and denti
|
|
|
Over-the-counter antacids usually include
|
sodium, aluminum, calcium, or magnesium
|
|
|
An extracorporeal liver assist device was surgically implanted into Sam. The device is very similar to
|
kidney dialysis
|
|
|
An X-rays series of the bile ducts is called a
|
cholangiogram
|
|
|
The disorder of the large intestine producing a "cobblestone" effect within the tissues of the colon is
|
Crohn's disease
|
|
|
The organs of the alimentary canal are innervated by sympathetic as well as by parasympathetic nerve fibers.
TRUE/FALSE |
true
|
|
|
peristalsis mixes food in small segments of the alimentary canal with digestive enzyme .
TRUE/FALSE |
false
|
|
|
the chamber of the mouth between the tongue and the palate is the vestibule.
TRUE/FALSE |
false
|
|
|
A set of primary teeth consists of 20 teeth, whereas a set of secondary teeth consist of 32 teeth.
TRUE/FALSE |
true
|
|
|
The parotid gland differs from the submandibular and sublingual glands in that it secretes a clear fluid that is rich in amylase.
TRUE/FALSE |
true
|
|
|
The esophagus provides a passageway for substances from the larynx to the bronchi.
TRUE/FALSE |
false
|
|
|
Fatty foods stay in the stomach longer than protein or carbohydrate foods.
TRUE/FALSE |
true
|
|
|
The enterogastric reflex begins in the stomach and ends in the small intestine.
TRUE/FALSE |
false
|
|
|
Pancreatic acinar cells secrete pancreatic juice.
TRUE/FALSE |
true
|
|
|
Cholecystokinin, a hormone released from intestinal mucosa as a result of simulation by the presence of fats in the small intestine, stimulates the gallbladder to contract and release bile into the duodenum.
TRUE/FALSE |
true
|
|
|
Lymph transport fat molecule with longer chains of carbon atoms away from the intestine.
TRUE/FALSE |
true
|
|
|
From the stomach, food passes into the duodenum, then the jejunum, and then the ileum.
TRUE/FALSE |
true
|
|
|
the movement of chyme through the small intestine is increased by parasympathetic impulses and is inhibited by sympathetic impulses.
TRUE/FALSE |
true
|
|
|
the cecum is located at the inferior end of the descending colon.
TRUE/FALSE |
false
|
|
|
After eating, ____ signals the hypothalamus to suppress appetite.
|
leptin
|
|
|
Sarah eats only dairy, and no meat or eggs. She is a
|
lacto-vegetarian
|
|
|
Adiponectin is
|
A hormone made in fat tissue and secreted into the circulation, where it affects the response to insulin.
|
|
|
Inhibition of which hormone may help in weight loss?
|
Ghrelin
|
|
|
Vanessa takes many vitamin supplements, claiming that they give her energy. She is mistaken, because cells preferentially use _____ for energy.
|
carbohydrates
|
|
|
Cells of the _____ system require a continuous supply of glucose.
|
nervous
|
|
|
______ provides short term energy after cellular glucose supplies are depleted.
|
glycogen
|
|
|
Sugar that are part of RNA and DNA are
|
Ribose and deoxyribose
|
|
|
Lipids include
|
Fats
oils cholesterol |
|
|
A triglyceride consists of
|
glycerol and 3 fatty acids
|
|
|
Which of the following provides a source of complete proteins?
|
Eggs
|
|
|
A negative nitrogen balance results from a net loss of
|
Amino acids
|
|
|
A major step in extracting energy from proteins is
|
Deamination
|
|
|
There are ______ essential amino acids needed for adults.
|
8
|
|
|
Factors that affect BMR are
|
Body size
body temperature The level of endocrine activity |
|
|
Which of the following activities should lead to the loss of at least a pound of fat in one week?
|
Swimming or running for an hour each day
|
|
|
A large calorie (kilocalorie) equals the amount of heat required to raise the temperature of a kilogram of water by ____ degree Celsius.
|
1
|
|
|
Deficiency of vitamin ____ causes night blindness.
|
A
|
|
|
Treatment with antibiotic drugs is sometimes followed by a deficiency of vitamin
|
K
|
|
|
Fat soluble vitamins are
|
Absorbed more readily in the presence of bile salts.
|
|
|
Which of the following vitamins can promote intestinal absorption of calcium and phosphorus?
|
D
|
|
|
The condition associated with lack of intrinsic factor and decreased absorption of cayanobalamin is
|
pernicious anemia
|
|
|
Intrinsic factor regulates the absorption of
|
Vitamin b12
|
|
|
Vomiting, diarrhea and flushing are caused by
|
Excess niacin
|
|
|
Which of the following vitamins is necessary for producing collagen?
|
Vitamin C
|
|
|
Which of the following minerals is important in synthesizing and using ATP?
|
Magnesium
|
|
|
People suffering mineral deficiencies sometimes compulsively eat non nutritive substances, such as laundry starch, dirt, hair, and clay. This condition is called
|
pica
|
|
|
Which trace element and function is correctly matched?
|
Iron-part of hemoglobin molecule
|
|
|
Kwashiorkor may develop in children to have Dietary deficiencies of
|
proteins
|
|
|
Individuals at highest risk for developing anorexia nervosa are
|
AdolescentAdolescens
|
|
|
A protein deficiency may be accompanied by edema because of
|
A decrease in plasma proteins and therefore a decrease in colloid osmotic pressure
|
|
|
Which of the following terms are defined correctly?
|
Adequate diet - diet that provides sufficient energy and essential nutrients for growth, maintenance, and repair of tissues
Malnutrition - poor nutrition that results from a lack of essential nutrients Bulemia - binging and purging |
|
|
Medical conditions that affect the ability to obtain adequate nutrition include
|
Tooth decay
depression periodontal disease |
|
|
Vitamin A deficiency may take years to become noticeable because
|
The liver stores it
|
|
|
The ingredients listed on the label of a packaged food
|
Are listed in decreasing order by weight
|
|
Use the figure above to answer the following question. Evangeline is 5'4" and weighs 200 pounds. According to the BMI chart, she is
|
Obese
|
|
|
Britney is 5'2" and weighs 130 pounds. Christina is 5'8" and weighs 140 pounds. Madonna is 5'6" and weighs 150. Rihanna is 5'10" and weighs 150. Beyonce is 5'0" and weighs 120 pounds. Which woman has the lowest BMI?
|
Christina
|
|
|
Which of the following regimens should lead to the loss of one pound of fat in one week?
|
Burning 500 calories a day running or eating 500 fewer calories a day
|
|
|
Dietary supplements include dietary ingredients such as
|
a vitamin
a herb an amino acid |
|
|
Good general dietary advice for athletes is to eat
|
60% or or more carbohydrates, mostly from grains and vegetables
|
|
|
Macronutrients are carbohydrates, fats, and proteins.
TRUE/FALSE |
True
|
|
|
Monica doesn't eat anything that was once an animal. She is an ovo-vegetarian.
TRUE/FALSE |
False
|
|
|
Neuropeptide Y is secreted in the stomach and suppresses appetite.
TRUE/FALSE |
false
|
|
|
Intake of at least 10 grams of carbohydrate is needed daily to avoid protein breakdown.
TRUE/FALSE |
false
|
|
|
Glycogen in an adult's liver and muscle provides enough reserve energy to meet energy demands for about 12 hours.
TRUE/FALSE |
true
|
|
|
Carbohydrates include cholesterol and phospholipids.
TRUE/FALSE |
false
|
|
|
Cholesterol function in the body as an energy source, and furnishes molecular components for the synthesis of various sex hormones.
TRUE/FALSE |
false
|
|
|
The liver functions in fat metabolism to control the amount of glucose, amino acids, and iron released into the blood.
TRUE/FALSE |
False
|
|
|
Cholesterol is synthesized chiefly in the liver.
TRUE/FALSE |
True
|
|
|
A complete protein has adequate amounts of the essential amino acids.
TRUE/FALSE |
True
|
|
|
Complete proteins can promote normal growth, whereas incomplete proteins cannot promote normal growth.
TRUE/FALSE |
True
|
|
|
Amino acid can be used to synthesize proteins for cellular structures and for energy, and to synthesize proteins that function in various body processes.
TRUE/FALSE |
true
|
|
|
Gram for gram, carbohydrat provides about twice as much energy as protein.
TRUE/FALSE |
false
|
|
|
The average BMR for an adult indicates a need for 1 calorie of energy per hour for each gram of body weight.
TRUE/FALSE |
False
|
|
|
Caloric intake exceeding caloric output is a positive energy balance.
TRUE/FALSE |
true
|
|
|
Obesity is defined as a BMI over 30.
TRUE/FALSE |
True
|
|
|
Provitamins are special vitamins that elite athletes take.
TRUE/FALSE |
false
|
|
|
Vitamins directly provides energy.
TRUE/FALSE |
false
|
|
|
Cyanocobalamin is found exclusively in plants.
TRUE/FALSE |
false
|
|
|
About 75% of the minerals in the body are in bones and teeth as calcium and phosphorus, and homeostatic mechanisms regulate their concentrations.
TRUE/FALSE |
true
|
|
|
Dietary minerals are organic molecules.
TRUE/FALSE |
false
|
|
|
The most abundant major minerals are potassium and sodium.
TRUE/FALSE |
false
|
|
|
Magnesium affects ATP production and is therefore important in providing energy.
TRUE/FALSE |
true
|
|
|
Malnutrition due to diet alone is called secondary malnutrition.
TRUE/FALSE |
false
|
|
|
Kwashiorkor tends to affects adolescent girls from well-to-do families who perceive themselves as being too fat.
TRUE/FALSE |
false
|
|
|
A group of girls at a middle school are all suffering from anorexia nervosa. One girls counselor tells her that it is a serious illness, from which 15 to 21 percent who suffers dies. The counselor is correct.
TRUE/FALSE |
True
|
|
|
Hematocrit is
|
the percent of red blood cells in a blood sample
|
|
|
"Formed elements" are
|
blood cells and platelets
|
|
|
The normal white blood cell count is
|
4,500-10,000 cells per microliter of blood
|
|
|
Platelets are best described as
|
cytoplasmic fragments of cells
|
|
|
Which is the correct sequence for differentiation of a red blood cell?
|
hematopoietic stem cell, erythroblast, reticulocyte, erythrocyte
|
|
|
Which two mature blood cell types descend from myeloblasts?
|
neutrophils and basophils
|
|
|
Heme released from hemoglobin in aged red blood cells is decomposed in the liver into
|
Iron and the bile pigment biliverdin which is eventually converted to bilirubin
|
|
|
Which of the following formed elements releases serotonin?
|
Platelets
|
|
|
which of the following are most active as phagocytes?
|
neutrophils
|
|
|
Cyanosis is caused by an increased blood concentration of
|
Deoxyhemoglobin
|
|
|
Sickle cell disease is caused by
|
A mutation
|
|
|
Hydroxyurea treat sickle cell disease by
|
Activating production of hemoglobin normally produced only in a fetus
|
|
|
The protein that B cells produced attack foreign molecules are
|
Antibodies
|
|
|
Pus is composed of
|
bacteria, white blood cells, and damaged cells.
|
|
|
Blood vessel spasms following an injury are stimulated by
|
Serotonin released from platelets
|
|
|
Which of the following drinks reduces the amount of iron absorbed from food?
|
Tea
|
|
|
What is the substance in tea that binds iron, reducing the amount absorbed?
|
tannic acid
|
|
|
Blood platelets
|
Form from megakaryocytes
releases serotonin number from 150,000 to 400,000 per microliter blood |
|
|
In edema
|
tissues swell with fluid
|
|
|
What is the difference between serum and plasma?
|
Plasma contains fibrinogen; Serum does not.
|
|
|
A blood clot that forms abnormally in a blood vessel is a
|
Thrombus
|
|
|
Prothrombin time is a blood test used to evaluate
|
Extrinsic clotting mechanism
|
|
|
A pulmonary embolism is most likely caused by a clot reaching
|
A lung through a pulmonary artery
|
|
|
Thrombocytopenia is due to deficiency of
|
Platelets
|
|
|
As a platelet plug forms, platelets release
|
Serotonin
|
|
|
The basic events in the formation of a blood clot is a change of
|
Fibrinogen to fibrin
|
|
|
The final step in the formation of a blood clot in
|
That thrombin converts fibrinogen to fibrin
|
|
|
Vitamin K
|
Is essential for the synthesis of prothrombin
|
|
|
Petechiae are a symptom of
|
thrombocytopenia
|
|
|
Marianne has small, bruise-like spots on her skin and a low platelet count. These blemishes are most likely
|
petechiae
|
|
|
Which is the most rare ABO blood type in the US?
|
AB
|
|
|
The distribution of ABO blood types among Korean Americans differs markedly from that of Native Americans in that
|
Korean Americans have about equal frequency of types O, A, & B, with 10% AB, whereas Native Americans have mostly type O, with type AB very rare
|
|
|
What percentage of the US population is Rh negative?
|
15% of Caucasians and 5% of African Americans
|
|
|
Universal precautions are
|
Specific measures that health care workers should take to prevent transmission of bloodborne pathogens in the workplace
|
|
|
Stacey has been tired and bruising easily, and she's had 3 respiratory infections in the past few months. She has also had headaches and a few nosebleeds. A physician should should check her for
|
Leukemia
|
|
|
In leukemia
|
The blood has too many immature leukocytes
the person has lowered resistance to infection the blood has too few platelets |
|
|
On a long transcontinental flight a middle aged man gets up and exercises in the aisle, moving his hands, feet, arms, and legs as much as he can. He does this every 2 hours. The flight attendant asked him to sit down, but he explains that he is trying to prevent a very dangerous medical condition. He is talking about
|
Deep vein thrombosis
|
|
|
Risk factors for deep vein thrombosis are
|
Prolonged periods of staying still in one position
use of oral contraceptives or estrogen dehydration |
|
|
Genotyping differs from serology in that
|
serology detects diverse antigens, whereas genotyping detects the underlying genetic instructions for those antigens
|
|
|
Which of the following elements is included in hemoglobin molecules?
|
Iron
|
|
|
Two substances that are useful for dissolving blood clots are
|
urokinase and streptokinase
|
|
|
Blood is a type of epithelial tissue.
TRUE/FALSE |
false
|
|
|
A red blood cells contains a large nucleus; it is thicker near the center and thin around the rim of the cell.
TRUE/FALSE |
false
|
|
|
A platelet plug is formed when fibrinogen is converted to fibrin.
TRUE/FALSE |
false
|
|
|
Plasma contains fibrinogen; serum does not.
TRUE/FALSE |
true
|
|
|
The heart pumps about _____ liters of blood a day and contracts about ______ times in a lifetime.
|
7,000 liters; 2.5 billion
|
|
|
Circulation is vital because it
|
Supplies oxygen and nutrients to and removes wastes from tissues.
|
|
|
The pulmonary circuit
|
Sense oxygen poor blood to the lungs
|
|
|
The inner lining of the heart is the
|
Endocardium
|
|
|
The right atrium receives blood directly from
|
The superior vena cava, inferior venacava, and coronary sinus
|
|
|
The pain of angina pectoris comes from a blockage in an artery that supplies the
|
Heart
|
|
|
Which of the following correctly matches the valve to its function?
|
Mitral valve permits one way blood flow from the left atrium to the left ventricle
|
|
|
Blood flow to the right side of the heart muscle decreases due to construction of the _____, and descreased blood flow to the heart tissue can result in ____.
|
Right coronary artery; ischemia
|
|
|
Which of the following waves of an ECG pattern is correctly described?
|
P wave- depolarization of atria
|
|
|
The correct sequence of parts that carry cardiac impulse is
|
SA node, AV node, AV bundle, Purkinje fibers
|
|
|
The effect on the heart of excess potassium ion concentration usually is
|
Decreased rate and decrease force of contraction
|
|
|
An abnormally slow heart rate is termed
|
Bradycardia
|
|
|
Which of the following is most life threatening?
|
Ventricular fibrillation
|
|
|
Which of the following might serve as a secondary pacemaker for the heart?
|
AV node
|
|
|
Which of the following gases does endothelium release?
|
Nitric oxide
|
|
|
A person warming up after being cold feels a warm rush as blood flows quickly to the peripheral appendages. Nitric oxide is important in this situation because it
|
Relaxes the smooth muscle in the blood vessel wall
|
|
|
Because net inward pressure in the venular ends of capillaries is less than net outward pressure in the arteriolar and capillaries
|
More fluid leaves the capillaries than returns
|
|
|
Which type of blood vessel holds the greatest volume of blood?
|
Vein
|
|
|
The mechanism that ensures the volume of blood discharged from the heart is equal to the volume entering its chamber is ______ law of the heart.
|
Frank-starling's
|
|
|
When venous pressure is too low, ___ stimulate smooth muscles in the walls of veins to contract.
|
Sympathetic reflexes
|
|
|
Plasma proteins in capillaries help to
|
Maintain the osmotic pressure of the blood
|
|
|
The blood pressure in the large systemic arteries is greatest during
|
Ventricular systole
|
|
|
Which of the following helps return blood to the heart?
|
Contracting skeletal muscles
|
|
|
Factors that increase heart rate and blood pressure include
|
Emotional responses
exercise increase in body temperature |
|
|
Angiotensin II increases blood pressure by
|
Increasing peripheral resistance
|
|
|
The celiac artery provides blood to the
|
Liver and spleen
|
|
|
Which of the following is not a branch of the aorta?
|
Pulmonary artery
|
|
|
The external carotid arteries branch to structures in the
|
scalp
face base of the skull |
|
|
The structure that contain chemoreceptors that detect blood levels of oxygen and carbon dioxide are the
|
aortic bodies
|
|
|
Which artery is incorrectly matched to its location?
|
Thyrocervical arteries; thymus
|
|
|
The radial and ulnar veins merge to form the ____ vein
|
Brachial
|
|
|
The longest vein in the body is the
|
Great saphenous vein
|
|
|
Heart rate in a fetus is about ___, in a newborn about ___, and in an adult about ____.
|
145; 140; 70
|
|
|
Which of the following is due to an aging cardiovascular system?
|
The Tunica interna thickens
|
|
|
A left ventricular assist device
|
Can maintain cardiac function until a donor heart becomes available
|
|
|
Small areas of the myocardium contracting chaotically is called
|
fibrillation
|
|
|
Bruce has colorectal cancer that has spread to his lymphatic system. He is given a drug that is a angiogenesis inhibitors. The drug works by
|
Starving tumors by cutting off their blood supplies
|
|
|
Marjorie suffer from phlebitis. she has
|
inflammation of her veins
|
|
|
A sphygmomanometer measures
|
blood pressure
|
|
|
Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has
|
A very healthy cardiovascular system
|
|
|
Which of the following is not a factor that increases risk of developing atherosclerosis?
|
Low blood pressure
|
|
|
The apical heartbeat is heard by listening between the fifth and sixth ribs about 7.5 centimeters left of the midline.
TRUE/FALSE |
true
|
|
|
The smaller branches of the coronary arteries have some anastomoses between vessels.
TRUE/FALSE |
true
|
|
|
The visceral pericardium lines the pericardial cavity, whereas the parietal pericardium covers the surface of the heart.
TRUE/FALSE |
false
|
|
|
Capillary walls consist of a single layer of epithelial cells and exchange substances in the blood for substances in the tissue fluid surrounding body cells.
TRUE/FALSE |
true
|
|
|
Arteries are strong, elastic vessels that carry blood to the heart.
TRUE/FALSE |
false
|
|
|
The distribution of blood in capillary pathways is largely controlled by the action of precapillary sphincters.
TRUE/FALSE |
True
|
|
|
Osmotic pressure forces molecules in the blood out through capillary walls.
TRUE/FALSE |
false
|
|
|
Blood flow through capillary is controlled by precapillary sphincters, which opens or closes due to the requirements of the cells the capillary supplies.
TRUE/FALSE |
true
|
|
|
Lipid-soluble substances diffuse through channels in cell membranes of cells forming the capillary wall, whereas lipid-insoluble substances diffuses through most areas of the capillary cell membranes.
TRUE/FALSE |
false
|
|
|
Venules continue from capillaries to form veins, which return blood to the atria.
TRUE/FALSE |
true
|
|
|
Cardiac output is calculated by multiplying the stroke volume by the systolic blood pressure.
TRUE/FALSE |
false
|
|
|
The great saphenous vein is the longest vein in the body.
TRUE/FALSE |
True
|
|
|
The atria will empty during ____
|
atrial systole
|
|
|
Which chamber of the heart contains the pacemaker?
|
Right atrium
|
|
|
The central venous pressure is the pressure in the
|
Right atrium
|
|
|
The first heart sound results when the
|
A - V valves close
|
|
|
Which term indicates that tissue in the heart has died?
|
Infarction
|
|
|
The cardiac reflex control centers are located within the
|
Medulla oblongata
|
|
|
A unique venous system, called the ______, carries blood directly from the intestines to the liver for processing rather than directly into the inferior vena cava.
|
hepatic portal system
|
|
|
The pulmonary semilunar valve prevents a backflow of blood into the
|
Right ventricle
|
|
|
Cardiac output can be determined by which of the following formula?
|
HR x SV
|
|
|
_____ allows the atria to communicate with the ventricles.
|
A-V bundle
|
|
|
A primary function of lymphocytes is to
|
Act against foreign substances
|
|
|
Vitamin b12 is poorly absorbed in the absence of
|
Intrinsic factor
|
|
|
Blood vessel spasms following an injury are stimulated by
|
Serotonin released from platelets
|
|
|
A blood clot that forms abnormally in a blood vessel is a
|
Thrombus
|
|
|
Which of the following usually accounts for the smallest percentage of leukocytes in a blood sample?
|
Basophils
|
