Question

1) Make a drawing of the nervous system and label the brain, spinal cord, motor nerve and sensory nerve.

2) Provide an example of how the central nervous system and the peripheral nervous system work together to maintain homeostasis. As we exercise we create heat, in order to maintain a relatively constant core temperature the nervous system sends messages to the blood vessels to dilate (expand), increasing blood flow to the skin, and increasing sweating to help disperse the accumulating heat.

3) Explain how neurons are classified and provide 2 examples. There are three general classes of neurons corresponding to the three major aspects of nervous system: sensory neurons, interneurons, motor neurons.

4) Multiple sclerosis affects the myelin sheath. Make a drawing of the neuron and label the area that gets affected by multiple sclerosis.

5) Make a drawing of a synapse, label 3 areas and explain how these 3 areas participate in the sequence of events involved in impulse conduction accross the the synapse.

6) Explain the all or non principle of impulse transmission and what factors affect its rate.

7) List 2 differences and 2 similarities between: a)autonomic nervous system and the somatic motor division of the peripheral nervous system b)sensory nerve and motor nerve c)ventral root and dorsal root d)somatic and autonomic reflexes

8) Make a drawing of the spinal cord and label the location of the cervical plexus, brachial plexus, sacral plexus, lumbar plexus and the sympathetic nervous system. Label 1 nerve in each plexus and explain the function of that nerve.

9) Cranial nerves and spinal nerves do not occupy the same area in our body, why? how that relates to the function of these nerves

10) Olygodendrocytes produce myelin sheath. Schwann Cells produce myelin sheath. a)What is the difference between them? b)Why unmyelinated fibers are slower than myelinated fibers?


1) Make a drawing of the brain and spinal cord and identify the areas of formation, circulation and resorption of the cerebrospinal fluid (CSF)

2) Make a drawing of the brain and label cerebellum, cerebrum, diencephalon, brain stem and the 3 meninges and explain the function of each of these areas

3) Make a drawing of the brain and label the 12 cranial nerves. Explain the function of each of the cranial nerves.

4) Provide 2 similarities and 2 differences between sympathetic and parasympathetic nervous system.

5) Select 2 kind of receptors and provide 2 similarities and 2 differences between them

6) Make a drawing of the face and label the area where the receptors for olfaction the and olfactory nerve are located. Explain the relationship between the sense of smell and taste

7) Make a drawing of the ear and identify the vestibule, semicircular canal, malleus, incus and stapes.

8) Explain how the ears mantain static and dynamic equilibrium and allow us to hear

9) Make a drawing of the eye and label cornea, lens, pupil, retina, iris and lacrimal glands

10) Explain the differences between rods and cones and describe the photochemical cycles resulting in their stimulation.

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When a neuron is sufficiently stimulated to reach the threshold (a level of stimulation below which the cell does not fire), depolarization, or a change in cell potential, occurs. The threshold in neurons is about -55 mV. Either the threshold potential is reached and an action potential occurs, or it isn't reached and no action potential occurs: there's no such thing as a partial or weak action potential.
Once triggered, the action potential continues along the length of the axon without diminishing because the action potential depends upon cell membrane permeability, and not upon the strength of the triggering stimulus....

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