Question

question 7
1 pts
the part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the:
hypothalamus.
thalamus.
medulla.
midbrain.
question 8
1 pts
which is(are) the neurotransmitter(s) in a somatic motor pathway?
acetylcholine
amines
amino acids
neuropeptides
question 9
1 pts
conduction by the sixth cranial nerve results in sensations of hearing.
true
false

Explanation:

• Question 7: The hypothalamus has a direct connection with the pituitary gland. It can secrete releasing hormones (to stimulate hormone release from the pituitary) and inhibiting hormones (to prevent hormone release from the pituitary). The thalamus is mainly a sensory relay station, the medulla controls vital functions like breathing and heart rate, and the midbrain is involved in visual and auditory processing and motor control.
• Question 8: In the somatic motor pathway, the neurotransmitter at the neuromuscular junction is acetylcholine. Amines (e.g., dopamine, norepinephrine) are involved in other neural pathways (e.g., autonomic nervous system, mood - related pathways). Amino acids (e.g., glutamate, GABA) are also neurotransmitters but in different contexts (e.g., excitatory and inhibitory neurotransmitters in the central nervous system). Neuropeptides (e.g., endorphins) have functions like pain modulation and mood regulation.
• Question 9: The sixth cranial nerve is the abducens nerve, which controls the lateral rectus muscle of the eye (responsible for eye abduction). The eighth cranial nerve (vestibulocochlear nerve) is responsible for hearing (cochlear part) and balance (vestibular part).

Answer:

• Question 7: hypothalamus
• Question 8: Acetylcholine
• Question 9: False