Adrenal & Pancreas — NEET Biology MCQs with Solutions
Free NEET Biology Adrenal & Pancreas MCQs with step-by-step solutions (6 questions). Part of Chemical Coordination and Integration. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Adrenal & Pancreas · easy · theory
The hormone secreted by the adrenal medulla during emergencies ("fight or flight") is:
A. Adrenaline (epinephrine) ✓ Correct
B. Insulin
C. Thyroxine
D. Melatonin
Solution: Adrenaline (and noradrenaline) from the adrenal medulla prepares the body for emergencies.
Q2 — Adrenal & Pancreas · easy · theory
The pancreatic hormone that lowers blood glucose by promoting its uptake and storage is:
A. Insulin ✓ Correct
B. Cortisol
C. Glucagon
D. Adrenaline
Solution: Insulin (from β-cells of islets) lowers blood glucose; glucagon (α-cells) raises it.
Q3 — Adrenal & Pancreas · medium · theory
Diabetes mellitus results from the deficiency or inaction of ______, causing ______:
A. Thyroxine; goitre
B. Insulin; high blood glucose (hyperglycemia) and glucose in urine ✓ Correct
C. Glucagon; low blood glucose
D. Adrenaline; low blood pressure
Solution: Insulin deficiency/resistance causes hyperglycemia and glucosuria — diabetes mellitus.
Q4 — Adrenal & Pancreas · medium · theory
The adrenal cortex hormone that regulates carbohydrate metabolism and has anti-inflammatory effects is:
A. Cortisol (a glucocorticoid) ✓ Correct
B. Aldosterone
C. Insulin
D. Adrenaline
Solution: Glucocorticoids (cortisol) regulate carbohydrate/protein/fat metabolism and suppress inflammation/immune responses.
Q5 — Adrenal & Pancreas · hard · theory
Aldosterone (a mineralocorticoid from the adrenal cortex) mainly regulates:
A. Na⁺ and K⁺ balance and water (blood pressure) by acting on the kidney ✓ Correct
B. Body temperature
C. Blood glucose only
D. Calcium levels
Solution: Aldosterone promotes Na⁺/water reabsorption and K⁺ excretion in the kidney, controlling electrolyte and fluid balance.
Q6 — Adrenal & Pancreas · hard · theory
The islets of Langerhans have α-cells and β-cells that secrete, respectively:
A. Glucagon and insulin ✓ Correct
B. Cortisol and adrenaline
C. Insulin and glucagon
D. Somatostatin and insulin
Solution: α-cells secrete glucagon (raises glucose); β-cells secrete insulin (lowers glucose); together they regulate blood sugar.