Peripheral Nervous System

5. Thermoregulatory responses to heat include the activation of sweat glands and reflex _________.
7. This nerve carries parasympathetic fibers that control the lens and pupil of the eye.
8. The cervical ________ is formed by the ventral rami of the first four cervical nerves.
11. Each spinal nerve except C1 receives sensory input from a specific area of skin called a _________.
12. Division known for reduced energy expenditure and normal bodily maintenance.
15. A condition that  can be caused by an overactive sympathetic vasoconstrictor response promoted by continuous high levels of stress.
17. The _________ carries about 90% of all parasympathetic preganglionic fibers.
18. There are 12 spinal nerves at which point of issue?
19. Quick, involuntary, stereotyped reactions of glands or muscles to stimulation.
20. ___________ receptors are on the hormone-producing cells of the adrenal medulla.

1. Disease known for occasional spasmodic contractions of the digital arteries, numbness, coldness and pain in the fingers or toes.
2. __________ law states: any nerve serving a muscle that produces movement at a joint also innervates the joint itself and the skin over the joint.
3. Each spinal nerve connects to the spinal cord via a dorsal root and a _______ root.
4. The portion of the adrenal gland that secretes steroid hormones is called the adrenal _______.
6. The background rate of activity of the autonomic nervous system.
9. Extreme responses from this division are known as "fight-or-flight" responses.
10. What nerve is the right arrow in this image pointing to?
13. __________ receptors that promote blood clotting.
14. _________ reflexes are unconscious, automatic, stereotyped responses to stimulation.
16. The digestive tract has nervous system of its own called the ________ nervous system.