Hormones Flashcards
1
Q
Follicle-stimulating hormone (FSH)
A
- Source: GnRH from hypothalamus –> released by anterior pituitary (tropic)
- Type: peptide
- Action: stimulates follicle maturation in females; spermatogenesis in males
2
Q
Luteinizing hormone (LH)
A
- Source: GnRH from hypothalamus –> released by anterior pituitary (tropic)
- Type: peptide
- Action: stimulates ovulation in females; testosterone synthesis in males
3
Q
Adrenocorticotropic hormone (ACTH)
A
- Source: CRH from hypothalamus –> released by anterior pituitary (tropic)
- Type: peptide
- Action: stimulates adrenal cortex to synthesize and release glucocorticoids
4
Q
Thyroid-stimulating hormone (TSH)
A
- Source: TRH from hypothalamus –> released by anterior pituitary (tropic)
- Type: peptide
- Action: stimulates thyroid to produce thyroid hormones
5
Q
Prolactin
A
- Source: Decreased dopamine (PIF) from hypothalamus –> released by anterior pituitary (tropic)
- Type: peptide
- Action: stimulates milk production and secretion
6
Q
Endorphins
A
- Source: anterior pituitary (direct)
- Type: peptide
- Action: decrease pain sensation; can promote euphoria
7
Q
Growth hormone (GH)
A
- Source: GRHR from hypothalamus –> GH from anterior pituitary (both direct and tropic)
- Type: peptide
- Action: stimulates bone and muscle growth; raises blood glucose levels
8
Q
Antidiuretic hormone (ADH; vasopressin)
A
- Source: synthesized in hypothalamus –> released by posterior pituitary (direct)
- Type: peptide
- Action: stimulates water reabsorption in kidneys by increasing permeability of collecting duct; decreases blood osmolarity and increases blood volume
9
Q
Oxytocin
A
- Source: synthesized in hypothalamus –> released by posterior pituitary (direct)
- Type: peptide
- Action: stimulates uterine contractions during labor, milk secretion during lactation, bonding behavior
10
Q
Triiodothyronine (T3) and thyroxine (T4)
A
- Source: thyroid (follicular cells)
- Type: amino acid derivative
- Action: stimulate metabolic activity
11
Q
Calcitonin
A
- Source: thyroid (parafollicular/C-cells)
- Type: peptide
- Action: decreases blood calcium concentrations
12
Q
Parathyroid hormone (PTH)
A
- Source: parathyroids
- Type: peptide
- Action: increases blood calcium concentrations
13
Q
Glucocorticoids (cortisol and cortisone)
A
- Source: adrenal cortex
- Type: steroid (corticosteroid)
- Action: increase blood glucose concentrations; decrease protein synthesis; anti-inflammatory
14
Q
Mineralocorticoids (aldosterone)
A
- Source: adrenal cortex
- Type: steroid (corticosteroid)
- Action: increases water reabsorption in kidneys by increasing sodium reabsorption; promote K and H ion excretion; keep blood osmolarity constant
15
Q
Epinephrine and norepinephrine (catecholamines)
A
- Source: adrenal medulla
- Type: amino acid derivative
- Action: increase blood glucose concentrations and heart rate; dilate bronchi; alter blood flow patterns