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  4. Chemical Coordination and Integration Chapter-Wise Test 3

Chemical Coordination and Integration Chapter-Wise Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following hormones is secreted by the placenta?

Progesterone
Testosterone
Insulin
Adrenaline
1

During pregnancy, the placenta secretes progesterone, which helps maintain the uterine lining.

Which of the following statements about testosterone is correct?

Testosterone is secreted by the ovaries.
Testosterone is responsible for male secondary sexual characteristics.
Testosterone is secreted by the anterior pituitary.
Testosterone is a peptide hormone.
2

Testosterone, secreted by the testes, is responsible for male secondary sexual characteristics such as muscle growth and voice deepening.

Which hormone is known as the "fight or flight" hormone?

Cortisol
Adrenaline
Glucagon
Vasopressin
2

Adrenaline (epinephrine) is secreted by the adrenal medulla in response to stress, increasing heart rate and alertness.

Which gland secretes a hormone that regulates the sleep-wake cycle?

Pituitary gland
Pineal gland
Thyroid gland
Adrenal gland
2

The pineal gland secretes melatonin, which regulates the sleep-wake cycle and circadian rhythms.

Which of the following is an incorrect statement about the pituitary gland?

The pituitary gland is located at the base of the brain.
The anterior pituitary secretes growth hormone.
The posterior pituitary produces oxytocin and ADH.
The pituitary gland is also called the master gland.
3

The posterior pituitary stores and releases oxytocin and ADH, but these hormones are produced by the hypothalamus.

Which hormone is responsible for stimulating the secretion of gastric juice in the stomach?

Secretin
Gastrin
Cholecystokinin (CCK)
GIP
2

Gastrin stimulates the secretion of hydrochloric acid and digestive enzymes in the stomach.

Which endocrine gland secretes insulin?

Thyroid
Pancreas
Adrenal cortex
Pituitary gland
2

The pancreas secretes insulin from its beta cells, which regulates blood glucose levels.

Which hormone is known as the "satiety hormone" that regulates hunger?

Ghrelin
Leptin
Insulin
Glucagon
2

Leptin, secreted by adipose tissue, signals the brain to reduce hunger and regulate energy balance.

Which of the following statements about parathyroid hormone (PTH) is correct?

PTH decreases blood calcium levels.
PTH is secreted by the adrenal glands.
PTH promotes calcium absorption from the intestine.
PTH secretion is not influenced by blood calcium levels.
3

PTH increases blood calcium levels by promoting calcium absorption from the intestine and bone resorption.

Which endocrine gland secretes glucocorticoids?

Thyroid gland
Pancreas
Adrenal cortex
Pituitary gland
3

Glucocorticoids like cortisol are secreted by the adrenal cortex and regulate metabolism and stress response.

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