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Unit 19: Biology Part 2 Page 17 of 137

Somatic Nervous System – Part of the motor division of the PNS controlling
voluntary motion

Sphygmomanometer – Tool used to measure blood pressure

Spinal Cord – Tube of neurons that carries messages to and from the brain

Spongy bone- Lighter and less dense than compact bone; found toward the
center of the bone.

Sprains- A ligament injury; usually caused by the sudden overstretching of a
joint which causes tearing.

Stretching exercises- Exercises which warm-up the muscles.

Stroke – Disease caused by atherosclerosis of the arteries providing blood to
the brain

Sweat glands- Gland that opens to the skin surface through skin pores;
found all over the body; secretes sweat.

Sympathetic Division – Division of the autonomic nervous system that
controls the “fight or flight” response

Synapse – Place where axons and dendrites meet

Systolic Blood Pressure – Measure of the highest blood pressure

Taste Buds – Clusters of sensory neurons found on the tongue

Tissue – A group of cells working together

Tissue- A group of cells that work together for a common purpose.

Touch – Sense of pain, pressure, and temperature

trachea – tube through which air travels on its way to the lungs

urea – nitrogen-containing compound in the urine

ureter – tube that moves urine from the kidneys to the urethra

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