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HKIN 191 Lab Midterm the Brain and Spinal Cord Test Questions and Answers
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HKIN 191 Lab Midterm the Brain and Spinal Cord Test Questions and Answers Divisions of the External Spinal Cord - Answer-Cervical, thoracic, lumbar, sacral, coccygeal. Cervical Region - Answer-8 pairs of spinal nerves emerge (C1-C8). Thoracic Region - Answer-12 pairs of spinal nerves emerge ...

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  • August 5, 2024
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  • 2024/2025
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  • hkin 191 lab midterm the brain and spinal cord
  • divisions of the external spinal cord

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HKIN 191 Lab Midterm the Brain and
Spinal Cord Test Questions and
Answers

Divisions of the External Spinal Cord - Answer-Cervical, thoracic, lumbar, sacral,
coccygeal.

Cervical Region - Answer-8 pairs of spinal nerves emerge (C1-C8).

Thoracic Region - Answer-12 pairs of spinal nerves emerge (T1-T12).

Lumbar Region - Answer-5 pairs of spinal nerves emerge (L1-L5).

Sacral Region - Answer-5 pairs of spinal nerves emerge (S1-S5).

Coccygeal Region - Answer-1 pair of spinal nerves emerges.

Cervical and Lumbar Enlargements - Answer-Fatter spinal cord to relay more info to
legs and arms.

Conus Medullaris - Answer-End of spinal cord (L1-L2).

Protective Coverings and Spaces of the Brain (Cranial Meninges) - Answer-Dura mater,
subdural space, arachnoid mater, subarachnoid space, pia mater.

Dura Mater - Answer--Outer covering.
-Dense connective tissue.
-Strong.

Subdural Space - Answer-Contains interstitial fluid.

Arachnoid Mater - Answer--Middle layer.
-"Spider web" extensions.

Subarachnoid Space - Answer-Contains CSF.

Pia Mater - Answer--Inner layer.
-Directly adheres to brain

Cauda Equina - Answer-Roots of the lower spinal nerves that resemble wisps of hair.

, Filum Terminale - Answer-An extension of pia mater that anchors the spinal cord to the
coccyx.

Cervical Plexus (C1-C4) - Answer-Innervates the muscles of the larynx,
sternocleidomastoid, trapezius, and diaphragm.

2 Nerves of the Cervical Plexus - Answer-Phrenic nerve and ansa cervicalis.

Phrenic Nerve - Answer-Innervates the diaphragm.

Ansa Cervicalis - Answer-Innervates the infrahyoid muscles of the neck, therefor
enabling speech.

Brachial Plexus (C5-T1) - Answer-Innevates all the muscles of the upper limb.

5 Nerves of the Brachial Plexus - Answer-Musculocutaneous, axillary, median, radial,
and ulnar nerves.

Musculocutaneous Nerve - Answer-Innervates the coracobrachialis
Major Divisions of the Brain - Answer-Brain stem, cerebellum, cerebrum, diencephalon.

Divisions of the Brain Stem - Answer-Medulla, pons, midbrain.

Function of the Brain Stem - Answer-To relay sensory input up and motor output down.

Cerebellum - Answer-Compares intended movements with actual to attempt to execute
coordinated, skillful movements.

Divisions of the Diencephalon - Answer-Thalamus, hypothalamus, epithalamus.

Thalamus - Answer-Relays almost all of the sensory input to cerebral cortex.

Hypothalamus - Answer-Essential for endocrine system.

Epithalamus - Answer-Pineal gland secretes melatonin.

Cerebrum - Answer--Motor cortex controls movement.
-Sensory cortex percieves sensations.
-Center for memory, personality, and intelligence..

Ventricles of the Brain - Answer-Lateral ventricles, third ventricle, fourth ventricle.

Septum Pellucidum - Answer-Separates lateral ventricles.

Choroid Plexus - Answer--Produces CSF.

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