BIO 245 KLESATH EXAM 1 NCSU EXAM
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
3 reflex mechanisms that stimulate hormone secretion - CORRECT
ANSWERS 1.Hormonal Stimulation: stimulus for release of
hormones by the binding of another hormone (eg the TSH from
anterior pituitary binds to thyroid gland to release TH)
2.Humoral Stimulation: release of hormone in response to change of
blood nutrient levels (eg blood glucose levels rise so insulin is
released from pancreas, or fall and glucagon is released)
3.Neural Stimulation: direct stimulation from nervous system to
endocrine gland (eg epinephrine and norepinephrine by adrenal
medulla during fight or flight)
Hormonal Stimulation - CORRECT ANSWERS Stimulus for release of
hormones by the binding of another hormone (eg the TSH from
anterior pituitary binds to thyroid gland to release TH)
Humoral Stimulation - CORRECT ANSWERS release of hormone in
response to change of blood nutrient levels (eg blood glucose levels
rise so insulin is released from pancreas, or fall and glucagon is
released)
,BIO 245 KLESATH EXAM 1 NCSU EXAM
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
Neural Stimulation - CORRECT ANSWERS direct stimulation from
nervous system to endocrine gland (eg epinephrine and
norepinephrine by adrenal medulla during fight or flight)
Steroids - CORRECT ANSWERS lipid soluble molecules synthesized
by cholesterol
1. Gonads (Estrogen, Progesterone, Testosterone)
2. Adrenal Cortex hormones (Corticosteroids like cortisol,
mineralocorticoids, aldosterone)
Biogenic Amines - CORRECT ANSWERS modified amino acids, water
soluble (except thyroid)
1. Catecholamines (epinephrine and norepinephrine)
2. Thyroid Hormone → lipid soluble
3. Melatonin
Proteins - CORRECT ANSWERS most hormones, small chains of
amino acids, water soluble
1. Small peptides and large polypeptides
2. Glycoproteins
, BIO 245 KLESATH EXAM 1 NCSU EXAM
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
Local Hormones - CORRECT ANSWERS DO NOT circulate in blood, so
only affect either same cell that produced them (autocrine) or
neighboring cells (Paracrine)
1. Eicosanoids: synthesized through enzymatic cascade,
Phospholipase A2 removes fatty acid from phospholipid within the
plasma membrane
--> prostaglandins
Prostaglandins - CORRECT ANSWERS -Famous eicosanoid
-are diverse group: synthesized by most tissues in the body
-Stimulate pain receptors, reduce fever, increase inflammatory
response
Lipid soluble hormones: - CORRECT ANSWERS Can cross membrane,
but needs carrier protein while circulating in blood, once unbound
they can enter the nucleus
a. Has a longer half-life bc protected by carrier proteins
b. Once inside the cells, hormone binds to intracellular receptor
either in nucleus of cytosol
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
3 reflex mechanisms that stimulate hormone secretion - CORRECT
ANSWERS 1.Hormonal Stimulation: stimulus for release of
hormones by the binding of another hormone (eg the TSH from
anterior pituitary binds to thyroid gland to release TH)
2.Humoral Stimulation: release of hormone in response to change of
blood nutrient levels (eg blood glucose levels rise so insulin is
released from pancreas, or fall and glucagon is released)
3.Neural Stimulation: direct stimulation from nervous system to
endocrine gland (eg epinephrine and norepinephrine by adrenal
medulla during fight or flight)
Hormonal Stimulation - CORRECT ANSWERS Stimulus for release of
hormones by the binding of another hormone (eg the TSH from
anterior pituitary binds to thyroid gland to release TH)
Humoral Stimulation - CORRECT ANSWERS release of hormone in
response to change of blood nutrient levels (eg blood glucose levels
rise so insulin is released from pancreas, or fall and glucagon is
released)
,BIO 245 KLESATH EXAM 1 NCSU EXAM
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
Neural Stimulation - CORRECT ANSWERS direct stimulation from
nervous system to endocrine gland (eg epinephrine and
norepinephrine by adrenal medulla during fight or flight)
Steroids - CORRECT ANSWERS lipid soluble molecules synthesized
by cholesterol
1. Gonads (Estrogen, Progesterone, Testosterone)
2. Adrenal Cortex hormones (Corticosteroids like cortisol,
mineralocorticoids, aldosterone)
Biogenic Amines - CORRECT ANSWERS modified amino acids, water
soluble (except thyroid)
1. Catecholamines (epinephrine and norepinephrine)
2. Thyroid Hormone → lipid soluble
3. Melatonin
Proteins - CORRECT ANSWERS most hormones, small chains of
amino acids, water soluble
1. Small peptides and large polypeptides
2. Glycoproteins
, BIO 245 KLESATH EXAM 1 NCSU EXAM
QUESTIONS WITH ANSWERS 100%
CORRECT VERIFIED/DETAILED A
COMPLETE SOLUTION LATEST
UPDATED 2024/2025 BEST RATED A+
FOR SUCCESS
Local Hormones - CORRECT ANSWERS DO NOT circulate in blood, so
only affect either same cell that produced them (autocrine) or
neighboring cells (Paracrine)
1. Eicosanoids: synthesized through enzymatic cascade,
Phospholipase A2 removes fatty acid from phospholipid within the
plasma membrane
--> prostaglandins
Prostaglandins - CORRECT ANSWERS -Famous eicosanoid
-are diverse group: synthesized by most tissues in the body
-Stimulate pain receptors, reduce fever, increase inflammatory
response
Lipid soluble hormones: - CORRECT ANSWERS Can cross membrane,
but needs carrier protein while circulating in blood, once unbound
they can enter the nucleus
a. Has a longer half-life bc protected by carrier proteins
b. Once inside the cells, hormone binds to intracellular receptor
either in nucleus of cytosol
