Consider the following statements regarding function of adrenal medullary hormones : [2025]
(A) It causes pupilary constriction.
(B) It is a hyperglycemic hormone.
(C) It causes piloerection.
(D) It increases strength of heart contraction.
Choose the correct answer from the options given below :
C and D only
B, C and D only
A, C and D only
D only
(2)
Adrenal medulla secretes two hormones called adrenaline or epinephrine and noradrenaline or norepinephrine (also called emergency hormones).
Both the hormones -
• Cause pupillary dilation (not constriction)
• Stimulate breakdown of glycogen resulting in increased concentration of glucose in blood i.e., cause hyperglycemia.
• Cause piloerection (raising of hair).
• Increase strength of heart contraction i.e., heartbeat.
Why can’t insulin be given orally to diabetic patients? [2025]
Human body will elicit strong immune response
It will be digested in Gastro-Intestinal (GI) tract
Because of structural variation
Its bioavailability will be increased
(2)
Insulin can’t be administered orally to diabetic patients as being the proteinaceous molecule, it will be digested in gastro-intestinal tract.
Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus? [2025]
Luteinizing hormone (LH)
Anti-diuretic hormone (ADH)
Follicle-stimulating hormone (FSH)
Adrenocorticotropic hormone (ACTH)
(2)
Neurohypophysis i.e., posterior pituitary (Pars nervosa) stores and releases two hormones called oxytocin and vasopressin (Also called ADH i.e., antidiuretic hormone) which are actually synthesised by hypothalamus and are transported axonally to neurohypophysis. The pars distalis (anterior pituitary) produces follicle stimulating hormone (FSH), adrenocorticotropic hormone (ACTH) and luteinizing hormone (LH).
Match List-I with List-II. [2025]
| List-I | List-II | ||
| A. | Progesterone | I. | Pars intermedia |
| B. | Relaxin | II. | Ovary |
| C. | Melanocyte stimulating hormone | III. | Adrenal Medulla |
| D. | Catecholamines | IV. | Corpus luteum |
Choose the correct answer from the options given below :
A-IV, B-II, C-I, D-III
A-IV, B-II, C-III, D-I
A-II, B-IV, C-I, D-III
A-III, B-II, C-IV, D-I
(1)
The correct answer is [A-IV, B-II, C-I, D-III]
• Progesterone – A steroidal hormone which is secreted by the corpus luteum
• Relaxin – A proteinaceous hormone which is secreted by the ovaries in the later stage of pregnancy
• Melanocyte stimulating hormone – A proteinaceous hormone released by the pars intermedia
• Catecholamines – An amino-acid derived hormone released from the adrenal medulla during emergency conditions
