319) Sound detection a) causes activation of thalamic neurons in the lateral gen
ID: 3480677 • Letter: 3
Question
319) Sound detection a) causes activation of thalamic neurons in the lateral geniculate nuclei. b) may change the activity of several brainstem nuclei. c) involves pressure waves in the perilymph in the cochlear duct. d) is relayed as a sensation in the vestibular portion of N VIII. e) stimulates hair cells whose cell bodies are in the spiral ganglion.322) Upper and lower eyelids a) are also known as palpebrae. b) are joined at the medial and lateral canthus. c) contain sebaceous glands, along the inner margin, abd tarsal glands, associated with the eyelashes. d) A and B e) A and C 319) Sound detection a) causes activation of thalamic neurons in the lateral geniculate nuclei. b) may change the activity of several brainstem nuclei. c) involves pressure waves in the perilymph in the cochlear duct. d) is relayed as a sensation in the vestibular portion of N VIII. e) stimulates hair cells whose cell bodies are in the spiral ganglion.
322) Upper and lower eyelids a) are also known as palpebrae. b) are joined at the medial and lateral canthus. c) contain sebaceous glands, along the inner margin, abd tarsal glands, associated with the eyelashes. d) A and B e) A and C
Explanation / Answer
319) Answers are options b, c, e
Sound detection
b) may change the activity of several brainstem nuclei.
c) involves pressure waves in the perilymph in the cochlear duct.
e) stimulates hair cells whose cell bodies are in the spiral ganglion.
Sound detection causes activation of thalamic neurons in the medial geniculate nuclei.
Sound is relayed as a sensation in the auditory portion of N VIII, the vestibular division is for equilibrium.
322) Answer is option ‘d’
Eyelids meet at the medial and lateral angles of the eye known as the medial and lateral commissures or canthi.
The tarsal glands or Meibomian glands are modified sebaceous glands.
Their ducts open just posterior to the eyelashes and produce oily secretion.
Ciliary glands are modified sweat glands and present between the hair follicles.
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