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What are the gereal functions of the endocrine system?
- fluid and electrolyte balance
- stress response
- growth and development
- protein, lipid, and carb metabolism
- sexual maturation
What does the anterior pituitary consist of?
- growth hormone
- adrenocorticotropic hormone (ACTH)
- thyroid stimulating hormone (TSH)
What are the functions of the growth hormone?
- anabolism (bone, muscle)
- catabolism (adipose)
What is the stimulus and frunction of prolactin?
- stimulus: pregnancy and nursing
- function: milk synthesis
What is the stimulus and function of ACTH?
- stimulus: decrease cortisol and stress
- function: likes adrenal cortex >cortisol etc...
What is the stimulus and function for TSH?
- stimulus: decreased thyroid hormone
- function: thyroid gland releases thyroid hormone
What does posterior pituitary do?
stores hormones made in hypothalamus
What consist of posterior pituitary?
oxytocin and antidiaretic hormone
What is the stimulus and function of oxytocin?
- stimulus: nursing
- function: milk release (letdown)
What is the stimulus and function of ADH?
- stimulus: increase plasma osmality
- function: H2O absorption (kidney)
where is the thyroid gland located?
anterior to trachea
What does the thyroid gland consist of?
What is the stimulus and function of the thyroid hormone?
- stimulus: decreased TH > increase TSH
- function: basal metabolic rate (BMR)
What is the location of the adrenal cortex?
- adrenal- superior to kidney
- cortex- outer
What does the adrenal cortex consist of?
aldosterone and cortisol
What is the #1 stimulus and function of aldosterone?
- #1 stimulus: decrease ECF
- function: Na+ reabsorption (kidney) > H2O reabsorption
What is the stimulus and function of cortisol?
- stimulus: increase ACTH
- function: maintains BP, resistance to stress, CHO, protein, fat metabolism
What is the location of the adrenal medulla?
What does adrenal medulla consist of?
epinephrine and noreepinephrine
What is the stimulus and function of epinephrine and norepinephrine?
- stimulus: sympathetic discharge
- function: maintains BP and resistance to stress
What is the location of the pancreas?
retro peritoneal, posterior and inferior to stomach
What does the pancreas consist of?
- insulin-dependent tissue
What is the stimulus and function of glucogen?
- stimulus: decrease glucose
- function: increase glucose
What is the stimulus and function of insulin?
- stimulus: increased glucose
- A. anabolism (#1)
- -glucose > glycogen
- -fat synthesis
- -protein synthesis
- B. lowers glucose
Which forms of thyroid hormone are active versus inactive?
Does T4 remain inactive? Why?
No, its turns to T3 when it hits the skin???
Define insulin-dependent tissue and what are they?
- requires insulin for glucose entrance into the cell
- 1. skeletal
- 2. cardiac muscle
- 3. adipose tissue
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