Chapter 10-Homeostasis

Question 1

What is the muscular lining of the kidneys?

Answer 1

Detrusor muscle

Question 2

Which section of the nervous system causes the detrusor muscle to contract?

Answer 2

Parasympathetic activity causes the detrusor muscle to contract

Question 3

What are the differences between the internal and external sphincter?

Answer 3

Internal sphincter is made of smooth muscle (involuntary) contracted at rest

External sphincter is made of skeletal muscle and is under voluntary control

Question 4

Describe the process of urination

Answer 4

When the bladder is full stretch receptors signal to the body that the bladder needs to be emptied.

Parasympathetic Neurons fire and the detrusor muscle contracts which causes the internal sphincter to relax.

When the individual is ready to empty the bladder by contraction of the abdominal cavity which causes compression of the bladder which increases the flow of urine.

Question 5

What is the primary role of the kidneys?

Answer 5

Regulate blood volume and osmolarity

Question 6

What is the difference between filtration secretion and reabsorption?

Answer 6

Filtration is the Movement of solutes from blood to filtrate at the Bowmans capsule

Secretion is the Movement of solutes from blood to fill tree anywhere besides the Bowmans capsule

Reabsorption is movement of solute from filtrate to blood

Question 7

What are examples of substances that are always re-absorbed into the body?

Answer 7

Googles amino acids and vitamins