Nervous System
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. NERVOUS SYSTEM
A. The cranial ___ that serves the retina
2. NEURON
B. A cell that is specialized to conduct nerve impulses
3. NERVES
C. That part of the central nervous system that includes all the higher nervous centers
4. REFLEX
D. Plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three
5. IRIS
E. The membrane in the ear that vibrates to sound
6. PUPIL
F. The part of the ___ visible externally
7. LENS
G. A distinctive emotional aura experienced instinctively
8. OPTIC NERVE
H. An automatic instinctive unlearned reaction to a stimulus
9. VIBRATION
I. Liquid in drinks like beer and wine that adults sometimes have
10. OUTER EAR
J. Any bundle of ___ fibers running to various organs and tissues of the body (plural)
11. EAR CANAL
K. Either of the passages in the outer ___ from the auricle to the tympanic membrane
12. EARDRUM
L. Curved glass that bends light in glasses and cameras
13. SWEET
M. A dish served as the last course of a meal
14. SOUR
N. The opening in the center of the iris that lets light into the eye.
15. SALTY
O. A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
16. BITTER
P. The taste experience when vinegar or lemon juice is taken into the mouth
17. LARYNX
Q. A cartilaginous structure at the top of the trachea
18. CAFFEINE
R. One of the four basic taste sensations
19. ALCOHOL
S. English term for a dry sharp-tasting ale with strong flavor of hops
20. BRAIN
T. The sensory and control apparatus consisting of a network of nerve cells