WCU PHYS 261 WEEK 7 DIGESTIVE AND
URINARY FINAL PAPER 2026 COMPLETE
ANSWERS VERIFIED
◉ The contraction cycle is initiated by the rise in _______ released
from the sarcoplasmic reticulum (SR). Answer: Ca2+
◉ The cardiac output is equal to the Answer: product of heart rate
and stroke volume
◉ The importance of the plateau phase of the action potential of
myocardial cells is in Answer: preventing tetanus
◉ If cardiac output increases and resistance in arterioles does NOT
change, what happens to arterial blood pressure? Answer: increases
◉ The action potential traveling along the t-tubule changes the
conformation of the Answer: dihydropyridine (DHP) receptor (L-
type calcium channel)
◉ Restoring lost fluid from the capillaries back to the circulatory
system is one of the major functions of the ________ system. Answer:
lymphatic
, ◉ An increase in plasma potassium levels is properly called Answer:
hyperkalemia
◉ Chief cells secrete Answer: pepsinogen
◉ The hormone vasopressin Answer: stimulates kidneys to retain
water
◉ The enzyme renin is responsible for the production of Answer:
Angiotensin I
◉ A glomerulus is Answer: a "ball" of capillaries within Bowman's
capsule
◉ Dehydration leads to ________ blood volume, ________ blood
pressure, and ________ osmolarity. Answer: decreased, decreased,
increased
◉ G cells of the stomach secrete Answer: gastrin
◉ Increased angiotensin II levels would result in increased Answer:
a. blood volume
b. retention of water
URINARY FINAL PAPER 2026 COMPLETE
ANSWERS VERIFIED
◉ The contraction cycle is initiated by the rise in _______ released
from the sarcoplasmic reticulum (SR). Answer: Ca2+
◉ The cardiac output is equal to the Answer: product of heart rate
and stroke volume
◉ The importance of the plateau phase of the action potential of
myocardial cells is in Answer: preventing tetanus
◉ If cardiac output increases and resistance in arterioles does NOT
change, what happens to arterial blood pressure? Answer: increases
◉ The action potential traveling along the t-tubule changes the
conformation of the Answer: dihydropyridine (DHP) receptor (L-
type calcium channel)
◉ Restoring lost fluid from the capillaries back to the circulatory
system is one of the major functions of the ________ system. Answer:
lymphatic
, ◉ An increase in plasma potassium levels is properly called Answer:
hyperkalemia
◉ Chief cells secrete Answer: pepsinogen
◉ The hormone vasopressin Answer: stimulates kidneys to retain
water
◉ The enzyme renin is responsible for the production of Answer:
Angiotensin I
◉ A glomerulus is Answer: a "ball" of capillaries within Bowman's
capsule
◉ Dehydration leads to ________ blood volume, ________ blood
pressure, and ________ osmolarity. Answer: decreased, decreased,
increased
◉ G cells of the stomach secrete Answer: gastrin
◉ Increased angiotensin II levels would result in increased Answer:
a. blood volume
b. retention of water
