Misc

Question 1

Organs that maintain homeostasis

Answer 1

• heart
• lungs
• kidneys
• adrenal glands
• pituitary
• parathyroid

Question 2

How does the heart help maintain homeostasis

Answer 2

must pump blood w/ sufficient force to perfuse all organs and push enough blood through the kidneys for filtering

Question 3

How do the lungs help maintain homeostasis

Answer 3

help maintain acid-base balance by releasing CO2. Also remove 300 mL water/day via expired air

Question 4

How do the kidneys help maintain homeostasis

Answer 4

maintain fluid balance in the body by filtering the blood and releasing fluids as needed. Electrolyte levels are maintained the same way. Waste and toxins are removed from the blood and body in the urine. pH of the blood is maintained via the retention of hydrogen ions.

Question 5

How does the pituitary gland help maintain homeostasis

Answer 5

stores and releases ADH from the hypothalamus to direct the kidneys to retain fluids to maintain cellular osmotic pressure

Question 6

How does the parathyroid help maintain homeostasis

Answer 6

maintains calcium and phosphate levels by causing calcium absorption by the intestines and renal tubules from the bones as needed

Question 7

How do the adrenal glands help maintain homeostasis

Answer 7

aldosterone and and cortisol are produced by the the adrenals to to cause the kidneys to retain sodium and fluids

Question 8

Ways the body gains fluid daily

Answer 8

• eating (approx 1000 ml)
• drinking (approx 1000 mL)
• metabolic processes (approx 300 mL)

Question 9

Ways the body loses fluid daily

Answer 9

• by the kidneys by urine production of 600 mL/day. However can increase in hot, dry climates, during fever, or as a result of burns.
• exhaled air (300-400 mL/day)
• stool (100-200 mL/day)