Cells are able to transport materials from one region of the cell to another just as the body is able to transport substances to different locations, or skeletal muscles (working with your skeleton) can transport you from the sofa to the refrigerator. What basic life process is illustrated by this description?
a. metabolism
b. growth
c. movement
d. differentiation
e. reproduction
c. movement
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Many hormones synthesized in the gastrointestinal tract are chemically identical to brain neurotransmitters
Indicate whether the statement is true or false
The first heart sound (lub) results from the closing of the ________ valves in the beginning of ________.
A. semilunar; ventricular diastole B. semilunar; ventricular systole C. AV; ventricular systole D. AV; ventricular diastole
A group of nerve cell bodies located outside the central nervous system is called a:
a. nerve b. ganglion c. nucleus d. column e. commissure
Formed elements make up about 55% of the volume of the blood, and plasma makes up 45%.
Answer the following statement true (T) or false (F)