Adjacent to the lumen, the innermost tissue layer of the GI tract is the ________.
Fill in the blank(s) with the appropriate word(s).
mucosa
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Chromosomes are composed mainly of DNA.
Answer the following statement true (T) or false (F)
Knowing the structure of the neuron, when a signal travels from a motor neuron to a skeletal muscle, the nerve signal must travel from
A. the axon of the motor neuron down to the neuroglia, and then from the neuroglia to the dendrites of the muscle. B. the neuroglia of the motor neuron down the axon, and then from the axon of the neuron to the muscle. C. the axon of the motor neuron down to the dendrites, and then from the dendrites of the neuron to the muscle. D. the dendrites of the motor neuron down the axon, and then from the axon of the neuron to the muscle.
Which muscle group is involved when a "pulled groin" occurs?
A) lateral rotators B) quadriceps C) hamstrings D) thigh adductors
The upper chambers of the heart are _____ and _____.
A) atria; pump blood within the heart B) atria; pump blood out of the heart C) ventricles; pump blood within the heart D) venticles; pump blood out of the heart.