Which structure and its secretion are correctly matched?

Correct Answer: D

Rationale: The seminal vesicles are correctly matched with fructose because they secrete a fluid rich in fructose, which provides energy for sperm motility. This fluid makes up a significant portion of semen and is essential for sperm survival and function. The other options are incorrect because they do not accurately describe the secretions of the respective structures.

Correct Answer: C

Rationale: Cranial nerve III (oculomotor nerve) is the correct answer because it innervates the levator palpebrae superioris muscle, which is responsible for elevating the eyelid. Damage to this nerve results in ptosis, or drooping of the eyelid, along with other symptoms such as diplopia and impaired eye movement.

Correct Answer: B

Rationale: Thalamus opticus is the correct answer because it is a key relay station for sensory information, including pain, temperature, and visual signals. Damage to the thalamus can result in hemianesthesia (sensory loss on one side), hemianopia (visual field loss on one side), and sensory hemiataxia (loss of coordination on one side) due to disrupted sensory processing.

Correct Answer: D

Rationale: Babinski's response is the correct answer because it is a pathological reflex indicative of upper motor neuron damage, not meningeal irritation. Meningeal syndrome, which includes neck stiffness, headache, and photophobia, is typically caused by inflammation of the meninges, as seen in meningitis or subarachnoid hemorrhage.

Correct Answer: D

Rationale: Interruption of the cervical sympathetic trunk leads to Horner's syndrome, characterized by ipsilateral ptosis (drooping eyelid), miosis (pupil constriction), and anhidrosis (lack of sweating). Enophthalmos (sunken eye) and vasodilatation in the facial skin may also occur due to loss of sympathetic tone.