Endocrine control of osmolarity Antidiuretic hormone ADH Aldosterone
- Slides: 18
Endocrine control of osmolarity Antidiuretic hormone (ADH) Aldosterone Atrial natriuretic peptide (ANP)
Osmoregulation: ADH • • Induces H 2 O conservation Released from posterior pituitary Peptide hormone Activates kidney cells to increase water pores on membrane surface inside collecting duct • Net effect: water conservation
Figure 45. 6 a Hormones of the hypothalamus and pituitary glands
Osmoregulation: Vasopressin (ADH)
Osmoregulation: Aldosterone • Induces Na+ conservation • Synthesized and released from adrenal cortex • Steroid hormone (moves in and out of cells by diffusion) • Acts on kidney cells to increase production of Na+ membrane channels and Na+/K+ pumps
Osmoregulation: Aldosterone
Osmoreg. : Atrial natriuretic peptide • Induces Na+ and water excretion • Released from the heart when plasma volume is high • Peptide hormone • Acts on the kidney to increase Na+ & water excretion, mechanisms not well understood • Also act as antagonist to vasopressin and aldosterone
Aldosterone & ADH effects on Os. M • If aldosterone rises Os. M increases or decreases? • If ADH rises Os. M increases or decreases?
Endocrine control of basal metabolic rate - thyroxine and triiodothyronine
Figure 45. 6 b Hormones of the hypothalamus and pituitary glands
Thyroid hormones - amines from thyroid that regulate BMR
Thyroid hormone control and function Hypothalamus Anterior pituitary Thyroid glands
Indicate whether level is increased, decreased or no change hypothalamus anterior pituitary thyroid gland Primary thyroid tumor hypersecreting Secondary hypothalamic atrophy due to local stroke Iodine deficiency TRH TRH TSH TSH T 3 & thyroxine metabolic rate
Endocrine response to stress - epinephrine and norepinephrine - cortisol
Figure 45. 14 Stress and the adrenal gland
Catecholamine hormones - amines that control our response to acute stress - Cardiac output increases - Blood vessels to skel. muscles dilate - Blood vessels to dig. organs constrict - Liver produces glucose
Cortisol control Diurnal rhythm & chronic stress hypothalamus CRH (+) anterior pituitary ACTH negative feedback (-) (+) adrenal cortex cortisol catabolic effects Break down proteins and fats to make more plasma glucose
- Antidiuretic hormone adh
- Difference between adh and aldosterone
- Adh vs aldosteron
- Adh function
- Acidophils
- Hypothalamus gland
- Acidifiers and alkalinizers
- Anti diuretics drugs name
- Cellule intercalate a e b
- Aldosterone/renin ratio
- Herecsatorna
- Aldosterone
- Aldosterone
- Renin-angiotensin-aldosterone system
- Neuroendocrine reflex
- Serum osmolarity formula
- Osmolality vs tonicity
- How does normal saline cause acidosis
- Osmolarity and osmolality