Question

25-1/Which hormone increases basal metabolic rate?

Select one: _

a. Cortisol

b. Insulin

c. Thyroxine

d. Progesterone

2/Which of the following is a function of tropomyosin in skeletal muscle?

Select one:

a. Binding to myosin during contraction -

b. Releasing Ca+2 after initiation of contraction

c. Acting as a relaxing protein

d. Sliding on actin to produce shortening

3/Absorption of which of the following nutrients will be affected by total removal of stomach?

Select one: _

a. Vitamin K _

b. Vitamin B12 _

c. Amino acids

d. Glucose

4/Growth hormone stimulates secretion of:

Select one:

_ a. human chorionic somatomammotropin

b. insulin-like growth hormone

C. insulin

d. growth hormone releasing hormone

Answer 1

ANSWERS

25-1.c. Thyroxine

Thyroid hormones stimulate diverse metabolic activities most tissues, which is leading to an increase in basal metabolic rate by increasing the number and activity of mitochondria in cells by binding to the cells' DNA.

2. b. Releasing Ca+2 after initiation of contraction

As nervous system sends information to the muscle cell to contract, calcium is released. This calcium activates the troponin complex, which moves tropomyosin, facilitating the muscle cell to contract.

3. b. Vitamin B12

Vitamin B12 (VB12) deficiency is a common complication after total gastrectomy, because hydrochloric acid in the stomach separates vitamin B12 from the protein to which vitamin B12 is attached in food. After this, vitamin B12 combines intrinsic factor and is absorbed by the body.Therefore Vitamin B12 malabsorption occurs when a protein known as intrinsic factor is not produced by the stomach (this leads to condition called pernicious anemia).So people who have had a partial or complete gastrectomy will need to supplement their diet with oral vitamin B12 or intramuscular or subcutaneous injections of vitamin B12. Vitamin B12, also known as cobalamin, is an important water-soluble vitamin functions:. It plays an essential role in the production of your red blood cells and DNA. The proper functioning of your nervous system. sources: naturally found in animal foods, including meats, fish, poultry, eggs and dairy

5. b. insulin-like growth hormone

Growth hormone (GH) is secreted from somatotroph cells in the anterior pituitary.The major role of growth hormone in stimulating body growth is to stimulate the liver and other tissues to secrete insulin-like growth factor IGF-I,which in turn stimulates proliferation of chondrocytes (cartilage cells), resulting in bone growth.