Test 3 Flashcards
3 factors that affect breathing
Co2, O2 and PH
Alveolar ventilation
air flow to the alveoli
alveolar perfusion
blood flow to the alveoli
General function of digestive system
prepares food for absorption and use by all cells of the body
Path of food through digestive system (4 organs)
esophagus, stomach, small intestine, large intestine
3 accessory organs. and how each one contributes to digestion
liver-produce bile
gallbladder-stores bile
pancreas-secretes digestive enzymes
3 functions of the liver
detoxification
bile secretion
storage of substances such as iron
3 functions of the stomach
- resevoir for food until it is partially digested
- secretes gastric juices to aid in digestion of food
- limited absorption
Organ where most absorption takes place
small intestine
Mechanical digestion
changes ingested food from large particles into small particles to facilitate chemical digestion
chemical digestion
breakdown of large MOLECULES into small molecules
peristalsis
a wave like ripple of the muscle layer of a hollow organ that produces forward movement along GI tract
Segmentation
digestive reflexes cause a back and forth movement within a single segment of the GI tract
Urinary system organs (3)
kidneys
bladder
urethra
function of the kidney
PRIMARY FUNCTION: process blood and form urine
-second function: maintain water salt balance, excretion of metabolic wastes, maintaining a blood ph, secretion of hormones
function of the bladder
stores urine
function of urethra
.
3 sections of kidneys
medulla, cortex, pelvis
Filtration
first step in blood processing that occurs in renal corpuscles (takes stuff out of blood into tubes)
tubular reabsorption
second step in urine formation (occurs as a result of passive and active transport mechanisms from all parts ) –reabsorb back into blood stream
tubular secretion
secreting out of blood stream
what is used to regulate water and is actively transported
sodium
3 regulating hormones
ADH, Aldosterone, Atrial Natriuretic Hormone (ANH)
3 regulating hormones (absorption of water)
ADH-increases water reabsorption
Aldosterone-increase of water reabsorption
ANH-Decrease of water reabsorption
