Question

Question 71 (1 point)

All action potentials are the same size.

Question 71 options:

	True
	False

Question 72

Parkinson's Disease is a pituitary disorder.

Question 72 options:

	True
	False

Question 75

PTH stimulates osteoblasts.

Question 75 options:

	True
	False

Question 76

People with myopia have difficulty focusing on objects that are far away.

Question 76 options:

	True
	False

Question 77

Hydroxyapatite is formed from potassium and calcium.

Question 77 options:

	True
	False

Please answer all questions.

Answer 1

71Q) all action potentials are the same size

Answer) true

There are no big or small action potentials in the nerve cells. So all action potentials are same in size. Action potentials are caused when different ions cross the neuron membrane.

72Q) Parkinson's Disease is a pituitary disorder

Answer) false

Parkinson's disease is a progressive disorder caused by degeneration of nerve cell in the part of brain called substantia nigra which controls the movement. These nerve cells die or become impaired losing the ability to produce an important chemical called dopamine

75Q) PTH stimulates osteoblast

Answer) true

Parathyroid hormone stimulates Osteoblast activity

76Q) people with Myopia have difficulty focusing on objects that are far away

Answer) true

Myopia is a condition in which close objects appears clearly, but far ones don't

Q77) Hydroxyapatite is formed from potassium and calcium

Answer) false

Hydroxyapitite is made-up of calcium and phosphate