2024-2025 NEWEST |Bio 245 Klesath Exam 1 NCSU
|COMPLETE SOLUTIONS 100% RATED CORRECT|GUARANTEED TO
PASS!!
3 reflex mechanisms that stimulate hormone secretion - (answer)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 - (answer)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 - (answer)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)
Neural Stimulation - (answer)direct stimulation from nervous system to endocrine
gland (eg epinephrine and norepinephrine by adrenal medulla during fight or
flight)
Steroids - (answer)lipid soluble molecules synthesized by cholesterol
1. Gonads (Estrogen, Progesterone, Testosterone)
2. Adrenal Cortex hormones (Corticosteroids like cortisol, mineralocorticoids,
aldosterone)
Biogenic Amines - (answer)modified amino acids, water soluble (except thyroid)
1. Catecholamines (epinephrine and norepinephrine)
2. Thyroid Hormone → lipid soluble
3. Melatonin
, Proteins - (answer)most hormones, small chains of amino acids, water soluble
1. Small peptides and large polypeptides
2. Glycoproteins
Local Hormones - (answer)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 - (answer)-Famous eicosanoid
-are diverse group: synthesized by most tissues in the body
-Stimulate pain receptors, reduce fever, increase inflammatory response
Lipid soluble hormones: - (answer)Can cross membrane, but needs carrier protein
while circulating in blood, once unbound they can enter the nucleus
|COMPLETE SOLUTIONS 100% RATED CORRECT|GUARANTEED TO
PASS!!
3 reflex mechanisms that stimulate hormone secretion - (answer)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 - (answer)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 - (answer)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)
Neural Stimulation - (answer)direct stimulation from nervous system to endocrine
gland (eg epinephrine and norepinephrine by adrenal medulla during fight or
flight)
Steroids - (answer)lipid soluble molecules synthesized by cholesterol
1. Gonads (Estrogen, Progesterone, Testosterone)
2. Adrenal Cortex hormones (Corticosteroids like cortisol, mineralocorticoids,
aldosterone)
Biogenic Amines - (answer)modified amino acids, water soluble (except thyroid)
1. Catecholamines (epinephrine and norepinephrine)
2. Thyroid Hormone → lipid soluble
3. Melatonin
, Proteins - (answer)most hormones, small chains of amino acids, water soluble
1. Small peptides and large polypeptides
2. Glycoproteins
Local Hormones - (answer)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 - (answer)-Famous eicosanoid
-are diverse group: synthesized by most tissues in the body
-Stimulate pain receptors, reduce fever, increase inflammatory response
Lipid soluble hormones: - (answer)Can cross membrane, but needs carrier protein
while circulating in blood, once unbound they can enter the nucleus
