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Human Anatomy

Week 6-12

QuestionAnswer
Sarcomere The basic functional unit of a muscle fiber where actin and myosin interact to produce contraction.
What neurotransmitter is released at the neuromuscular junction? Acetylcholine (ACh).
Motor Unit A single motor neuron and all the muscle fibers it innervates.
Which part of the neuron receives incoming signals? The dendrites.
The myelin sheath increases the _______ of action potential conduction. Speed
Cerebellum Brain region responsible for coordination, balance, and fine motor control.
What structure connects the two hemispheres of the brain? The corpus callosum.
Photoreceptors Light-detecting cells in the retina, including rods and cones.
Which endocrine gland regulates metabolism through T3 and T4 secretion? The thyroid gland.
The adrenal medulla releases the hormones epinephrine and ________ during the fight-or-flight response. Norepinephrine
Created by: Buckgirl13
 

 



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