of Exercise) Exam Questions &
Answers
What body system serves as the control center of the body by integrating mass communication
networks throughout the body. - ANSWERSThe nervous system
3 Major functions of the nervous system - ANSWERSsensory, integrative, and motor
What is the functional unit of the nervous system? - ANSWERSthe neuron
What are the three main parts of a neuron? - ANSWERSthe soma or body (the main component
with the cell's organelles), the axon (the long projection off the soma), the dendrites (the
branches where signals are received)
What is the junction/space called between the axon of the nerve cell and the dendrite of
another (or receptor site)? - ANSWERSa synapse
What allows a message/signal to jump a synapse? - ANSWERSneurotransmitters - these initiate
a signal , called an action potential, that travels to the receiving cell
What is the isolating layer of an axon called? What is its purpose? - ANSWERSmylelin sheath;
speed up nerve transmission
The two main divisions of the nervous system. - ANSWERSCentral Nervous System (CNS, brain
and spinal cord) and the peripheral nervous system (PNS, the nerves coming off the CNS)
, What are the 4 major sections of the brain? - ANSWERS1. Cerebrum (muscle and organ control,
thought, hearing, language; outer portion is called the cerebral cortex)
2. Diencephalons (central part of the brain; regulates glands/hormones)
3. Cerebellum (balance, posture, coordination)
4. Brain Stem (connects cerebrum and cerebellum to spinal cord; center for control of visual and
auditory reflexes, heart rate, blood pressure, and breathing)
What is the name of the 3-layer protective membrane that protects the brain? -
ANSWERSmeninges
What are the two divisions of the Peripheral Nervous System (PNS)? - ANSWERSThe voluntary
(somatic) and involuntary (autonomic)
What are the two divisions of the autonomic nervous system (ANS)? - ANSWERSsympathetic
(speeds up the body systems understress condition; fight or flight); parasympathetic (slows
down the body functions)
In what tissues are mechanoreceptors found? - ANSWERSmuscles, tendons, ligaments, and
joints
What system provides form and shape to the body? - ANSWERSThe skeletal system
What are the two divisions of the skeletal system? - ANSWERSAxial (skull, rib cage and vertebral
column)
Appendicular (upper and lower extremities)
What is the skeletal system's two primary functions during movement? - ANSWERSSupport and
leverage