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38 Cards in this Set

  • Front
  • Back
Define homeostasis
The dynamic constancy of the internal physiological environment.
The ______ detects deviation from ____ _______ and activates effectors

Set point
What processes the signals given to the sensor?
The integrating center
What does it mean to be osmotically active?
The aspect of a solute that describes it's ability to cause movement of water
Positive feedback maintains homeostasis.

T of F

What is negative feedback?
The response in a particular process or activity that is the opposite of an initial process or activity.
A thermostat that increases in temperate in response to a rise in temperature.

What is this an example of?
Positive feedback
What are two examples of carrier mediated transport?
Active and facilitated diffusion
What happens when you drink ocean water?
Causes hypertonicity of the blood stream and the tissue cells release water in order to establish equilibrium
Why does edema occur when a person with high blood pressure eats
foods with high salt content?
It causes higher blood pressure due to presence of more salt in blood, can lead to peripheral and pulmonary edema
What is the alimentary canal?
A one way digestive tract through the body
Disaccharide + water ------->
Peptide + water ------->
2 AA
Fat + water -------->
Fatty acids + glycerol
Where does carbohydrate digestion begin?
The mouth
Lipid digestion begins in the stomach.

T of F

small intestines
What is the enzyme used in protein digestion?
What is the inactive form of pepsin?
What do the goblet, parietal, and chief cells secrete?
Goblet- mucus

Parietal- HCl

Chief- pepsinogen
What is the main site of absoprtion?
Small intestine
What does the large intestine produce?
Vitamins K & B and folic acid
Enzymes increase activation energy.

T of F

decrease activation energy
Proteins are only partially digested in the stomach. Where does digestion finish?
Small intestines, when it comes in contact with chyme
What does invertase do?
Reduces sucrose to fructose and glucose
What major hormones does the adrenal cortex secrete?
What does the adrenal medulla secrete?
ADH & oxytocin are secreted from what?
posterior pituitary gland
What does the anterior pituitary gland secerete?
trophic hormones
Secretin and cholecystokinin are secreted from what?
Small intestine
follicle stimulating hormone
lutenizing hormone
adrenococorticotropic hormone
thyroid stimulating hormone

growth hormone
Which hormone is responsible for milk production?
What hormone is the milk ejection reflex?
Name the three steroid hormones?
Sex steroids
Hyperthyroidism is also known as?
Grave's disease
What does the placenta secrete large amounts of?
estrogen, progesterone, and human chorionic gonadotropin
The melatonin hormone is secreted by what organ?
Pineal gland
Melatonin pills are used to treat what?
Seasonal affective disorder (SAD) and winter depression are caused by what?
Increased melatonin levels