endocrine system

Question 1

The adenohypophysis is controlled by hypothalamic hormones through the portal system.

Answer 1

True

Question 2

Ovarian estrogen inhibits LH and FSH during the luteal phase.

Answer 2

True

Question 3

The neurohypophysis produces and secretes hormones.

Answer 3

False

Question 4

Oxytocin release is triggered by neural stimuli such as suckling.

Answer 4

True

Question 5

Melatonin production peaks during daylight hours.

Answer 5

False

Question 6

The zona glomerulosa produces mineralocorticoids such as aldosterone.

Answer 6

True

Question 7

Insulin is a steroid hormone.

Answer 7

False

Question 8

The Sertoli cells secrete ABP in response to FSH.

Answer 8

True

Question 9

The pineal gland is protected by the blood-brain barrier.

Answer 9

False

Question 10

Nervous system signals have long-lasting effects compared to endocrine signals.

Answer 10

False

Question 11

The pituitary gland increases in weight during pregnancy.

Answer 11

True

Question 12

The posterior pituitary contains hormone-producing neurons.

Answer 12

False

Question 13

The endocrine system communicates through hormones via the bloodstream.

Answer 13

True

Question 14

Steroid hormones can cross the cell membrane and affect gene transcription.

Answer 14

True

Question 15

Thyroid hormone production is stimulated by TRH from the hypothalamus.

Answer 15

True

Question 16

C cells in the thyroid gland secrete T3 and T4.

Answer 16

False

Question 17

Beta cells in the pancreas secrete insulin.

Answer 17

True

Question 18

The adrenal medulla is regulated by the autonomic nervous system.

Answer 18

True

Question 19

ADH is secreted by the anterior pituitary.

Answer 19

False

Question 20

Calcitonin increases blood calcium levels.

Answer 20

False

Question 21

Parathyroid hormone is secreted by oxyphil cells.

Answer 21

False

Question 22

Alpha cells in the pancreas respond to low blood glucose by releasing insulin.

Answer 22

False

Question 23

Aldosterone is regulated by the hypothalamic-pituitary axis.

Answer 23

False

Question 24

Cortisol is a glucocorticoid secreted by the zona fasciculata.

Answer 24

True

Question 25

Testosterone is secreted by Leydig cells in the testes.

Answer 25

True

Question 26

Autocrine signaling affects the same cell that secreted the hormone.

Answer 26

True

Question 27

Histamine is an example of an endocrine hormone.

Answer 27

False

Question 28

The thyroid gland uses positive feedback to regulate hormone levels.

Answer 28

False

Question 29

Negative feedback loops are the most common regulatory mechanism in the endocrine system.

Answer 29

True

Question 30

The portal system allows faster hormonal signaling between hypothalamus and pituitary.

Answer 30

True