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5 Written Questions

1. bundle of nerve fibers in the CNS
2. two layers, outer periosteal layer and inner meningeal layer – some dural sinuses that hold blood
3. muscle that prevents a bone from moving (muscle that attach scapula to vertebrae)
4. innervate the skin, skeletal muscles, nodes and joints
5. carry sensory signals from receptors to the CNS

5 Matching Questions

1. Sympathec division motor
2. Smooth
3. Thalamus
4. Ipsilateral
5. Reticular Formation

1. a tends to prepare the body for action, for example, by accelerating the heartbeat and increasing respiratory airflow, and inhibiting digestion
2. b a network of over 100 nuclei extending throughout the brainstem, including some nuclei described earlier in this table, involved in somatic motor control, equilibrium, visual attention, breathing, swallowing, cardiovascular control, pain modulation, sleep and sensuousness
3. c gateway to the cerebral cortex – nearly alls sensory signals and other input to the cerebrum pass by way of nuclei in the thalamus – which processes these signals and relays coded information to areas of the cerebral cortex specialized to interpret it. nearly all regions of cerebral cortex send messages back through it – two way traffic
4. d when a tract does not decussate so the origin and destination of its fibers are on the same side of the body
5. e muscle structured in overlapping fashion, no striations, cells are fusiform (fat in the middle) – involuntary

5 Multiple Choice Questions

1. carries signals form receptors in the skin, muscles, bones and joints
   1. Somatic sensory division
   2. Somatic motor division
   3. Viceral sensory division
   4. Motor (efferent) division
2. primary site for receiving and interpreting signals of the general senses as well as signal for taste (one of the special senses)
   1. Frontal
   2. Occipital
   3. Parietal
   4. Visceral
3. cluster of neuronal cell bodies in the PNS
   1. Somatic
   2. Sulcus
   3. Nucleus
   4. Ganglion
4. thicker connective tissue sheath that wraps muscle fibers together in bundles called fascicles
   1. Epimisyum
   2. Cerebellum
   3. Endomysium
   4. Perimysium
5. collagen fibers of the epimysium and continuous with the periosteum, muscle tissue appears to rise right out of the bone
   1. Direct attachment
   2. Afferent
   3. Diencephalons
   4. Dermatome

5 True/False Question

1. Prime mover (agonist) → very thin membrane covering all surfaces
   

   True        False

2. Visceral → innervate blood vessels, glands, and vicera
   

   True        False

3. Sensory (afferent) division → carries motor signals by way of efferent nerve fibers from the CNS to the effectors (cells and organs that carry out the body’s responses, mainly gland and muscle cells
   

   True        False

4. Antagonist → a muscle that opposes a prime mover – limits the speed or range of the agonist, prevents excessive movement and joint injury (triceps and biceps brachii work as antagonistic muscle pair)
   

   True        False

5. Motor (efferent) neurons → send signals predominantly to the muscle and gland cells, effectors that carry out the body’s responses to stimuli. Called motor because most of them lead to muscle cells and efferent meaning away from CNS
   

   True        False