Question

the neurotransmitter ______ is involved in muscle movement and cognitive functioning.

○ glutamate
○ endorphin
○ acetylcholine

Explanation:

Glutamate is mainly for excitatory signaling in the brain. Endorphin is for pain relief and pleasure. Acetylcholine is known to be involved in muscle movement (at neuromuscular junctions) and cognitive functions like memory, so it matches the description.

Answer:

C. acetylcholine