ESS 345 EXAM 2 QUESTIONS AND ANSWERS VERIFIED

ESS 345 EXAM 2 QUESTIONS AND ANSWERS

VERIFIED
insulin


lowers glucose levels, made by beta cells, counters hyperglycemia, and facilitates glucose into cells via

GLUT-4


glacagon


raises blood glucose, made by alpha cells, counters hypoglecemia


During exercise


Plasma volume lowers


What hormones correct fluid imbalances


Posterior pituitary gland

Adrenal cortex

Kidneys


posterior pituitary


secreates ADH and Oxytocin


Only ADH is involved with


exercise


Stimuli for ADH release

, decrease plasma volume = increased osmolality


osmolarity stimulates


osmoreceptors in hypthalamus


when ADH is released


water retention increases at the kidney


Osmolarity


measure of total concentration of dissolved particles in body fluid compartments


if compartment osmolality decreases


water is drawn out


if compartment osmolality increases


water is drawn in


adrenal cortex


outermost layer secretes mineralcorticoids and aldosterone


Aldosterone


higher Na+ retention by kidneys which causes water retention


Stimuli for aldosterone release


- decrease plasma Na+

- decrease blood volume, blood pressure

- increase plasma K+