Chemical Coordination and Integration

The blood calcium level is lowered by the deficiency of

1. both calcitonin and parathormone
2. calcitonin
3. parathormone
4. thyroxine

In human adult females oxytocin:

1. causes strong uterine contractions during parturition
2. stimulates pituitary to secrete vasopressin
3. stimulates growth of mammary glands
4. is secreted by anterior pituitary

Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoreyed building starts climbing down the stairs rapidly. Which hormone initiated this action?

1. Adrenaline
2. Glucagon
3. Gastrin
4. Thyroxine

A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly?

1. Parotid
2. Pancreas
3. Thyroid
4. Parathyroid

Compared to a bull a bullock is docile because of:

1. Lower levels of adrenalin/noradrenalin in its blood
2. Lower levels of blood testosterone
3. Higher levels of thyroxin
4. Higher levels of cortisone

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

1. Glucagon
2. ACTH
3. Insulin
4. Adrenaline

Which of the following is an accumulation and release center of neurohormones?

1. Anterior pituitary lobe
2. Posterior pituitary lobe
3. Intermediate lobe of the pituitary
4. Hypothalamus

A steroid hormone which regulates glucose metabolism is

1. cortisone
2. cortisol
3. corticosterone
4. 11-deoxycorticosterone.

Which one of the following is not a secondary messenger in hormone action?

1. cAMP
2. cGMP
3. Calcium
4. Sodium

Which one of the following statements is correct?

1. Endocrine glands regulate neural activity, but not vice versa.
2. Neurons regulate endocrine activity, but not vice versa.
3. Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.
4. Neither hormones control neural activity nor the neurons control endocrine activity.