Fundamentals of the Nervous System
I. Fill in the chart w/the structure name, the function has been given to you.
Structure / Function1. / Part of the diencephalon that controls body tempt., thirst, metabolism, & sleep/wake cycles.
2. / The protective connective tissue which covers the brain.
3. / Acts as a bridge b/w the midbrain & the medulla & assists the medulla in regulating breathing.
4. / It regulates vital autonomic centers such as heartbeat, breathing, blood pressure. It also contains reflex centers for vomiting, coughing, sneezing, hiccups, & swallowing
5. Nerve (II) / Responsible for vision; a purely sensory nerve.
6. / Neuroglia, in the CNS that produce the myelin sheath.
7. / It includes the hypothalamus & parts of the cerebrum. (the emotional or affective brain)
8. / Aka fight or flight system of the autonomic n.s.
9. / A substance released @ axonal endings to initiate a nervous impulse & is stored in the synaptic vesicles.
10. / The neuron process that convey incoming messages TOWARD the cell body.
II. True/FalseQuestions
11. Myelination of nerve fibers in the CNS is the job of the oligodendrocyte.12. The largest portion of the brain is the cerebellum.
13. The nodes of Ranvier are gaps along the myelin sheath.
14. Ganglia are small masses of neuron cell bodies found outside the CNS.
15. A sensory neuron carries stimuli from the CNS to the effector.
16. Efferent neurons connect the sensory neurons to the motor neurons.
17. During depolarization, the sodium channels open.
18. The 3 functions of the NS are sensory output, motor input, & effector output.
19. The brain weighs about eight (8) pounds.
20. One of the major functions of the pons is to produce releasing factors that control the function of the anterior pituitary.
21. Cranial nerve VI is the abducens nerve.
22. Plasma is the liquid which gives buoyancy to the CNS organs.
23. Neurons are the functional unites of the nervous system.
III. Label the structures.