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126 Cards in this Set

  • Front
  • Back

Inspiration?

Flow of air into the lungs.

Expiration?

Expulsion of air from the lungs?

Costal Respiration (thoracic)?

Animal breathing with the thoracic cavity.



Ribs move outward with inspiration and in with expiration.



Deeper breathing than normal.

Abdominal Respiration (diaphragmatic)?

Little movement of the chest.



Diaphragm produces all inspiration and expiration.



Ordinary breathing.

Eupnea?

Easy breathing/ normal.

Dyspnea?

Difficult respiration.

Apnea?

No respiration.

Hyperpnea (hyperventilation)?

Increased depth/rate of respiration.

Hypopnea (hypoventilation)?

Decreased depth/rate of respiration.

Tidal volume?

The amount of air (in liters) that is inspired and expired with each breath.

Pleura?

Thin membrane the covers the thoracic organs and lines the thoracic cavity.

Mediastinum?

The space in the thoracic cavity between left and right lungs.

What are the 2 types of respiration?

External respiration.



Internal respiration.

External respiration?

Also called ventilation



Movement of air between environment and alveoli of the lungs.

Internal respiration?

Exchange of oxygen and carbon dioxide between blood and the cells.

What two parts is the respiratory system divided into?

Upper and lower respiratory tract.

What does the upper respiratory tract contain?

Nose, mouth, pharynx, epiglottis, larynx, and trachea.

What does the lower respiratory tract contain?

Bronchi, bronchiole, and alveoli.

What lines the respiratory system?

Mucous membrane. Special form of epi tissue.

What does the mucous membrane secrete?

Mucous composed of glandular secretion, salt, cells and leukocytes.

Cilla?

Hair like projections lining the respiratory tract.



Propels mucus and debris toward mouth and pharynx.

Nares?

The nasal septum divides the nares into right and left.

Nasal passage?

Starts and the nares.



The palate is the floor of the nasal passage and separates nose from mouth.



Warms and moistens incoming air.

Nasal turbinates?

Scroll like bones covered with highly vascular mucous membrane.



Dorsal nasal meatus and ventral nasal meatus used to pass nasogastric tube.

Where are the olfactory receptors located?

Mucous membranes of the nasal cavity.

Nasal sinuses?

Provide mucus the make bone lighter and produce sound.



Sinus is an air or fluid filled space.



Have mucous membrane lining.

Pharynx?

The Throat.

Nasopharynx?

Back of the nasal area.



Common passageway for food and air.

Oropharynx?

Back of oral cavity, tonsils considered a part of it.



Common passageway for food and air.

Epiglottis?

Diverts air into the trachea and food away from it.



A sail shaped cartilage which gaurds trachea.



Considered part of the Larynx.

Larynx?

Composed of bones of hyoid apparatus, cartilage, and muscle.



Voice box.



Supports the tongue and vocal cords.

Trachea (windpipe)?

Ventral to the esophagus.



Non collapsible tube.



Formed and held open by 'C' shaped cartilage rings.



Open part of 'C' is on the dorsal aspect.



Lined with cilla.



Distal end divides into Bronchi at the tracheal bifurcation.

Lungs?

Each lung is encased in a membrane sac called pleura.


Lungs are spongy.


Right lung has 4 lobes.


Left lung has 2 lobes.

Bronchi?

Trachea divides into left and right stems called Bronchi which have cartilage rings.


Bronchi divide into smaller bronchi until they become bronchioles.


Do not close

Bronchioles?

Contain no cartilage.


Can contract; called bronchoconstriction.


Where asthma and wheezing occurs.

Alveoli?

Small grape like clusters and the end of each bronchiole.


Each sac comprised of a thin membrane surrounded by microscopic capillaries.


Gas exchange occurs across the alveolar membrane.


Equilibrium achieved in less than 2 seconds.

Diaphragm?

Separates the thoracic and abdominal cavities.


Main muscle of respiration.


Attaches to lumbar vertebrae, ribs and sternum.

Physiology of Respiration?

Partial vacuum in the the thorax which allows the lungs to passively follow the movements of the thoracic wall and the diaphragm.


Oxygen used, CO2 produced. O2 thru tissue to lungs.CO2 diffuses from the tissues to blood where it binds to hemoglobin and gives blood blue.


CO2 breaks down into carbonic acid and affects blood pH


Excess CO2 lowers pH.

Respiratory Triggers?

-CO2



-pH



-O2



Increase in CO2=Decrease in pH=Increased respiration.



Decrease in CO2=Increase in pH=Decreased respiration.

Equine respiratory system?

Equid lungs are not lobed other than a small accessory lobe on the right.

Avian respiratory system?

No epiglottis.


Syrinx=Voice box.


No alveoli.


No diaphragm.

Homeostasis?

Maintained by Kidney via manipulating blood plasma.

Normal dog blood pH?

7.35-7.45

Five ways the kidney controls homeostasis?

-Blood filtration and secretion.


-Reabsorption.


-Fluid balance regulation.


-Acid-base balance.


-Hormone production.

Blood filtration and secretion?

Removal of waste products, from protein metabolism, by filtering the blood, end process waste is urine.


EX WASTE: Urea, Uric acid, Phosphorus.

Reabsorption?

Process of returning essential nutrients to the circulation, this maintains normal composition of plasma.


EX ESSENTIAL NUTRIENTS: Glucose, Amino acid.

Fluid balance regulation?

Kidneys work to ensure that the correct amount of water is kept in the body to maintain a healthy internal environment.


-Excess water in the body causes more urine to be formed


-Kidneys will conserve water if deficient.


-Regulates the balance of Na, K, and CL

Acid-base balance?

Kidneys help maintain blood (pressure) pH by removing hydrogen and bicarbonate ions from blood and excretes into urine.

Hormone production?

Cells in the kidney produce erythropoietin which is for RBC production. Related to severe kidney disease and anemia.


Kidneys influence the rate of release of ADH from posterior pituitary.

Renal consists of what?

-2 kidneys


-2 ureters


-1 bladder


-1 urethra

Kidney location?

Behind the lining of the abdominal cavity or outside the peritoneal cavity.

Working unit of the kidney?

Nephron; where urine is formed.

What does the Nephron consist of?

-Glomerulus (cluster of blood vessels).


-Glomerular Bowman capsule.


-Proximal convoluted tubule.


-Loop of Henle.


-Distal convoluted tubule.

Where does the blood enter the kidney from?

Renal artery.

Where does the blood leave the kidney from?

Renal vein.

Glomerulus?

Twisted bundle of capillaries. Bring blood into the Bowmans capsule to be filtered.

Bowman (glomerular) Capsule?

Where blood passes through and is filtered. Has semi-permeable membrane.


Filtrate is basically blood plasma without the proteins and fats.

Where is the most reabosorption happening?

Proximal convoluted tubules.

Proximal convoluted tubules?

80% of water, amino acids, glucose, and vitamins are reabsorbed here.

Loop of Henle?

Reduces the volume of urine while reabsorbing sodium (Na) and Chloride (Cl).

Distal Convoluted Tubule?

Acid/Base balance occurs. EX: removal of excess acids from the body.


Final reabsorption or Na occurs.


Regulated by the hormone aldosterone, which is secreted by the adrenal cortex.



Increased absorption of Na causes water retention.

Normal urine pH?

5-6 acid pH.

Collecting Tubules?

Final concentrated urine.


Leads to renal pelvis. Large funnel to collect urine to ureters.

Ureter?

Carrys urine from kidneys to bladder.

Bladder?

Flow of urine out of it is controlled by a sphincter.

Urethra?

In female the only function is to transport urine.


In males it also transports repro fluids out.

Equine Urinary System?

Right kidney is heart shaped.

Bovine Urinary System?

Have lobulated kidneys and no renal pelvis.

Avian Urinary System?

Kidney supplied with afferent venous blood from renal portal system.


Ureters bring urine to the cloaca instead of bladder.


Urine is semi solid, contains white urates.


Most water reabsorbed.

What does the Endocrine system consist of?

Ductless glands or group of cells that secrete hormones directly into the bloodstream. Endocrine system linked to nervous system through the hypothalamus.

What are the 8 Endocrine Glands?

1)Pituitary Gland


2)Thyroid Gland


3)Parathyroid Gland


4)Adrenal Gland


5)Pancreas


6)Thymus Gland


7)Gonads


8)Pineal Glands

Pituitary Gland?

Master gland.


Contains 2 lobes, anterior lobes and posterior lobe.


Secretes many hormones, controls other glands.


Acts in response to stimuli from the hypothalamus.


Located below hypothalamus which is connected by the infundibulum.

Anterior lobe?

Adenohypophyis because it produces hormones.


Called indirect acting hormones because the hormones cause their target organ to produce a second hormone.

Posterior lobe?

Neurohypophysis because it responds to neurologic stimulus and does not produce hormones but rather stores and secretes hormones produced by the hypothalamus. Called direct acting hormones because they produce desired effect directly in the target organ.

Thyroid gland?

One gland.


Butterfly shaped with left and right lobe.


Located on either side of the larynx.


Regulates metabolism and iodine uptake.

Parathyroid glands?

Four glands on the surface of the thyroid gland.


Secretions help regulate blood calcium and phosphorus levels.

Adrenal glands?

Two small glands located cranial to each kidney.


Regulates electrolytes, metabolism, sexual functions and the bodys response to injury.


Consists of two parts: adrenal cortex (outer) and adrenal medulla (inner)

Pancreas?

One gland near the proximal portion of the duodenum.


Has endocrine and exocrine functions.


Specialized cells are called Islets of Langerhans.

Thymus gland?

One gland located near the midline, in the cranioventral portion of the thoracic cavity.


The gland is predominant in young animals and has immunologic function.

Gonads?

Ovaries or testicles (paired).


Gamete (sex cells) producing glands.

Pineal glands?

One is located in the central protion of the brain.


The entire function is not fully understood, but know that it secretes hormones that affect the circadian rhythm.

Anterior Pituitary Gland produces what hormones?

TSH, ACTH, FSH, LH, PROLACTIN, GH, MSH.

TSH?

Thyroid stimulating hormone. Affects growth and thyroid gland.

ACTH?

Adenocorticotropic hormone. Affects growth and adrenal glands.

FSH?

Follicle stimulating hormone. Secretion of estrogen and growth of eggs in ovaries or sperm.

LH?

Luteinizing hormone. Involved in ovulation and aids in maintaining pregnancy.

PROLACTIN?

Involved in milk secretion and maternal behavior.

GH?

Growth hormone.

MSH?

Melanocyte stimulating hormone. Skin pigmentation.

Posterior Pituitary Gland produces what hormones?

ADH, and OXYTOCIN.

ADH?

Antidiuretic hormone. Maintains water balance by influencing water reabsorption.

OXYTOCIN?

Stimulates uterine contractions during birth and milk let down.

Thyroid gland produces what hormones?

T3, T4, and Calcitonin.

T3?

Triiodothyronine. Regulates metabolism.

T4?

Tertraiodothyronine or Thyroxine. Regulates metabolism.

Calcitonin?

Regulates blood calcium levels. Stimulates movement of calcium into the bone.

Parathyroid glands produce what hormone?

PTH.

PTH?

Increases blood calcium levels by reducing bone calcium levels. Regulates phosphorus levels of blood and bone.

Adrenal Cortex produces what hormones?

STEROIDS



Mineralocorticoids, Glucocorticoids, and Androgens.

Mineralocorticoids?

Group of corticosteroids that regulate water and electrolyte balance.

Glucocorticoids?

Group of corticosteroids that regulate carbohydrate, fat and protein metabolism. Also resistance to stress and immunologic functions EX: hydrocortisone

Androgen?

Group of corticosteroids involved in development and maintenance of male sex charecters.

Adrenal Medulla hormones?

Epinephrine and Norepinephrine.

Paratineum?

Abdominal cavity.

Epinephrine?

Adrenaline. Simulates SNS (sympathtic nervous system)

Norepinephrine?

Noradrenaline. Simulates SNS (sympathetic nervous system)

Pancreas hormones?

Insulin and glucagon.

Insulin?

Decreases blood glucose and transports glucose.

Glucagon?

Increases blood glucose by stimulating liver to convert glycogen to glucose.

Thymus hormones?

Thymosin.

Thymosin?

Maturation of WBC.

Ovaries hormones?

Estrogen and progesterone.

Estrogen?

Development of secondary sex charecteristics and regulates ovulation.

Progesterone?

Maintains pregnency.

Testes hormone?

Testosterone.

Testosterone?

Development of secondary sex characteristics.

Pineal Gland hormone?

Melatonin.

Melatonin?

Controls body rhythm and repro timing.

Prostaglandins?

Produced in almost every bone.


Regulates cells.


Can cause constriction of vessels.

Ovaries?

Suspended from dorsal wall by Broad and Round suspensory ligaments.



Produce Ova and hormones. (Which hormones does the ovaries make?)

Oviducts?

Tubes from ovary to uterus.


Also called fallopian tube.


Attached by the proper ligament.


Fertilization occurs here.

Uterus?

Attached by the Broad and Round ligaments


Uterine opening is protected by the CERVIX.

Vulva consists of what 2 parts?

Vestibule and Labia.

Vestibule?

Short space between labia and opening of vagina


Muscular


Prevents penis from dismounting

Labia?

Outside border edge of the vulva. becomes red and swollen during estrous cycle.

What hormone is released to produce milk let down and induces labor?

Oxytocin.