FREE BIOLOGY AND STUDY GAMES ABOUT OAT BIO EXAM

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FREE BIOLOGY AND STUDY GAMES ABOUT OAT BIO EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -24 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Anterior Pituitary

Answer:

synthesizes direct hormones and tropic hormones; secretions regulated by hypothalamic secretions; hormones = FLAT PEG

Question 2: ACTH

Answer:

hormone secreted by anterior pituitary gland that is in control of the release of adrenal cortical hormones

Question 3: Adrenal Glands

Answer:

glands that sit on top of kidneys and consist of cortex and medulla

Question 4: Acromegaly

Answer:

disorder in GH that causes overgrowth of bone

Question 5: ADH

Answer:

increases permeability of collecting duct in nephron to water so water is reabsorbed and blood volume increases

Question 6: Endocrine glands

Answer:

adrenal, pituitary, hypothalamus,thyroid, parathyroid, pancreas, gonads, pineal, kidneys, gastrointestinal, thymus, heart

Question 7: Posterior Pituitary

Answer:

stores and releases oxytocin and ADH which are produced by hypothalamus

Question 8: Direct Hormones of Anterior Pituitary

Answer:

PEG; Growth Hormone (bone and muscle growth), prolactin (milk production in mammary glands), endorphins (pain reliever)

Question 9: Peptide Hormones

Answer:

act as first messengers; bind to extracellular surface receptors and cause conversion of ATP to cAMP which leads to cascade effect; fast acting and short lived

Question 10: Glucocorticoids

Answer:

steroid hormones involved in glucose regulation and protein metabolism; they break down proteins to increase blood glucose levels (cortisol, cortisone)

Question 11: Oxytocin

Answer:

hormone secreted during childbirth that increases strength and frequency of uterine contractions; positive feedback

Question 12: Endocrine System

Answer:

has glands that secrete hormones directly into circulatory system

Question 13: Adrenal Medulla

Answer:

produces epinephrine (adrenaline) and norepinephrine (nonadrenaline)

Question 14: Aldosterone

Answer:

mineralocorticoid that causes reabsorption of sodium and water to rise blood volume and bp, leads to hypertension

Question 15: cAMP/Cyclic AMP

Answer:

Second messenger that initiates cascade effect

Question 16: Tropic Hormones of Anterior Pituitary

Answer:

FLAT; FSH (maturation of ovarian follicles), LH (formation of corpus luteum), ACTH (adrenal cortex), TSH (thyroid gland)

Question 17: Nephron

Answer:

functional unit of the kidney

Question 18: Pituitary gland

Answer:

small gland lying at base of brain; two parts (anterior and posterior)

Question 19: Epinephrine

Answer:

type of catecholamine hormone that turns glycogen to glucose in liver and muscle tissue, increasing heart beat (fight or flight response); increases blood to muscles, brain etc and decreases blood to kidneys and digestive tract

Question 20: Adrenal Cortex

Answer:

this is stimulated in response to stress by ACTH and it secretes corticosteroids (3 types)

Question 21: Steroid Hormones

Answer:

lipid-derived, ring structure; since lipid soluble, can go right into cell and bind to intracellular receptors and effect the expression of genes

Question 22: Androgens

Answer:

male sex hormones secreted by adrenal cortex

Question 23: Mineralocorticoids

Answer:

regulate plasma levels of sodium,potassium, and water volume

Question 24: hormones

Answer:

chemical substances (2 types)