Nokea
Ingestion takes place in the?
- A. Stomach
- B. Small intestine
- C. Mouth
- D. Large intestine
Correct Answer: C
Rationale: The correct answer is C: Mouth. Ingestion is the process of taking food or liquid into the body through the mouth. The mouth is responsible for chewing and breaking down food into smaller pieces, mixing it with saliva to start the digestion process. The stomach (A), small intestine (B), and large intestine (D) are not where ingestion takes place; they are involved in further digestion, absorption, and processing of nutrients. The mouth is the initial site of digestion and the starting point of the digestive process.
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Which if the following gland which can be classified as an endocrine and an exocrine gland?
- A. Thyroid.
- B. Thymus.
- C. Pancreas.
- D. Pituitary.
Correct Answer: C
Rationale: The correct answer is C: Pancreas. The pancreas is both an endocrine and exocrine gland. It secretes hormones like insulin and glucagon (endocrine function) into the bloodstream to regulate blood sugar levels, while also producing digestive enzymes (exocrine function) that are released into the small intestine to aid in digestion. The other choices are incorrect because:
A: Thyroid - primarily an endocrine gland that produces hormones like thyroxine.
B: Thymus - strictly an endocrine gland responsible for T-cell development.
D: Pituitary - also an endocrine gland that controls various other endocrine glands in the body.
What significant side effect of terazosin should the doctor warn a 69-year-old male patient about?
- A. Bronchospasm
- B. Postural hypotension
- C. Heart failure
- D. Sedation
Correct Answer: B
Rationale: The correct answer is B: Postural hypotension. Terazosin is an alpha-1 blocker used to treat hypertension and BPH. Postural hypotension is a common side effect due to vasodilation, causing a sudden drop in blood pressure when changing positions. This side effect can lead to dizziness, fainting, and falls, especially in elderly patients. Bronchospasm (A) is not a common side effect of terazosin. Heart failure (C) is not a typical side effect and is unlikely with proper monitoring. Sedation (D) is not a significant side effect of terazosin.
Which gland controls basal metabolic rate (BMR)?
- A. Parathyroid
- B. Pancreas
- C. Testes
- D. Thyroid
Correct Answer: D
Rationale: The correct answer is D: Thyroid. The thyroid gland produces hormones T3 and T4, which regulate the body's metabolism, including the basal metabolic rate (BMR). These hormones play a crucial role in controlling how the body uses energy. The other choices, A: Parathyroid, B: Pancreas, and C: Testes, do not directly regulate BMR. Parathyroid regulates calcium levels, pancreas regulates blood sugar levels, and testes produce hormones related to male reproductive functions. Thyroid is the only gland among the choices that specifically controls BMR through its hormone production.
Nicotinic receptors are blocked by which of the following:
- A. Propranolol
- B. Trimetaphan
- C. Prazosin
- D. Pilocarpine
Correct Answer: B
Rationale: The correct answer is B: Trimetaphan. Nicotinic receptors are blocked by non-depolarizing neuromuscular blockers like Trimetaphan. Propranolol (A) is a beta-blocker, Prazosin (C) is an alpha-1 blocker, and Pilocarpine (D) is a muscarinic agonist, none of which block nicotinic receptors. Therefore, Trimetaphan (B) is the only choice that directly blocks nicotinic receptors.
Androgens are produced by the _______.
- A. ovaries.
- B. testes.
- C. hypothalamus.
- D. islets of Langerhans.
Correct Answer: B
Rationale: The correct answer is B: testes. Androgens, such as testosterone, are male sex hormones primarily produced by the testes. The testes contain specialized cells called Leydig cells that secrete androgens. Ovaries (A) produce female sex hormones like estrogen and progesterone. The hypothalamus (C) regulates hormone production through the pituitary gland but does not directly produce androgens. Islets of Langerhans (D) are clusters of cells in the pancreas responsible for producing insulin and glucagon, not androgens.