Chapter 13 The Spinal Cord, Spinal Nerves and Somatic Reflexes & Chapeter 15 The Brain & Cranial Nerves

The intercostal nerves between the ribs arise from which spinal nerve plexus? A. cervical B. brachial C. lumbar D. sarcal E. none of them

none of them

Below L2, the vertebra canal is occupied by a bundle of spinal nerve roots called A. the terminal filum B. the descending tracts C. the gracile fasciculus D. the medullary cone E. the cauda equina

the cauda equina

Which of the following does not receive any input fronm the eyes? A. the hypothalamus B. the frontal lobe C. the thalamus D. the occipital lobe E. the midbrain

the frontal lobe

The bracial plexus gives rise to all of the following nerves except A. the axillary nerve B. the radial nerve C. the obturator nerve D. the median nerve E. the ulnar nerve

the obturator nerve

True or False: Some spinal nerves are sensory and other are motor.

False- all spinal nerves are mixed nerves, none are purely sensory or motor.

True or False: The dermatomes are overlappng regions of skin innervated by different spinal nerves.

False- dermatomes overlap each other by as much as much as 50%

Ture or False: Somatic reflexes are these that do do not involve the brain

False- some somatic reflexes are mediated primarily through the brainstem & cerebellum

True or False: Most of the cerebrospinal fluid is produced by the choroid plexuses.

False- the choroid plexuses produce only 30% of the CSF

List the 12 cranial nerves

Olfactory I Optic II Oculomotor III Trochlear IV Trgierminal V Abducens VI Facial VII Vestibulochlear VIII Glossapharygeal IX Vagus X Accessory XI Hypoglossal XII

Damage to the__________nerve could result in defects of eye movement, A. optic B. vagus C. trigeminal D. facial E. abducens

abducens

A lesion in which lobe of the cerebrum is most likely to cause a radical alteration of the personality?

frontal

Which of these is not a region of the spinal cord? A. cervical B. thoracic C. pelvic D. lumbar E. sarcal

pelvic

The _______ nerves arise from the cervical plexus and innervate the diaphragm

phrenic

The nonvisual awareness of the boby's position and movemenet is called_____________.

proprioception

The sciatic nerve is a composite of two nerves, the_____ and _________

tibial, common fibular