Lab 8

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created 8 years ago by anoffke
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Brain, Spinal Cord, and Spinal and Cranial Nerves
updated 8 years ago by anoffke
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human anatomy
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1

Spinal cord is ____ within the vertebral column and the spinal nerves exit ____ the vertebrae through ____ and run horizontally.

Vertical, between, intervertebral foramina

2

What are the 4 parts of gray matter?

Posterior horn, lateral horn and anterior horn, central canal

3

What are the 3 parts of white matter?

Posterior funiculus, anterior funiculus and lateral funiculus

4

What are the 6 parts of the spinal cord in cross-section?

Gray matter, white matter, dorsal (posterior) root, dorsal root ganglion, ventral (anterior) root, and spinal nerve

5

Spinal nerves merge and branch in ___ regions along the spinal cord to form web-like networks of nerves called ___

3, plexuses

6

A plexus of nerves carries ___ information from bones, joints, muscles and ____, and carries motor information to selected ___ ____

sensory, skin, skeletal muscles

7

A nerve that branches off of the cervical plexus is the ____

phrenic nerve (contacts the diaphragm)

8

3 examples of nerves that branch off of the brachial plexus are the ___,___, and ___

radial nerve (along radius), ulnar nerve (along ulna) and median nerve (along forearm between radial and ulnar nerves)

9

The obturator nerve and femoral nerve are branches off of the ___

lumbar plexus

10

The ___ (also known as the ischiadic nerve) consists of the ___ and ___ and is part of the ___ plexus.

Sciatic
Tibial nerve (identified as medial popliteal nerve and posterior tibial nerve on leg muscle model)
Common fibular (common peroneal) nerve
Sacral

11

What are the three parts of the brainstem?

Medulla oblongata, pons, mesencephalon

12

Where is the cerebellum located?

Posterior, inferior side of brain

13

What are the 3 parts of the diencephalon?

Thalamus, hypothalamus and epithalamus

14

What are the 4 lobes of the cerebrum?

Frontal, parietal, occipital and temporal lobes

15

The left and right cerebral hemispheres are connected by the ___ ____

Corpus callosum

16

What are the 3 kinds of ventricles?

Lateral, third and fourth ventricles

17

Name the 12 cranial nerves in order. Know names, Roman numerals, functions, and destinations of all of them.

OLd OPie OCcasionally TRies TRIGonometry And Feels VEry GLOomy VAGUe And HYPOactive

Some Say Marry Money, But My Brother Says Big Business Matters More

18

I- Olfactory

sensory- smell

19

II- Optic

sensory- sight

20

III- Oculomotor

motor- 4/6 eye muscles, shape of lens, constriction of pupil

21

IV- Trochlear

motor- 1 eye muscle

22

V- Trigeminal

sensory- facial sensations
motor- muscles of mastication, anterior belly digastric

23

VI- Abducens

motor- 1 eye muscle

24

VII- Facial

sensory- anterior 2/3 tongue (taste)
motor- posterior belly digastric, facial expressions (facial muscles)
parasympathetic- salivary glands (2), lacrimal glands

25

VIII- Vestibulocochlear

sensory- hearing and balance

26

IX- Glossopharyngeal

sensory- posterior 1/3 tongue (taste), back of mouth, tonsils, middle ear
motor- 1 muscle of pharynx
parasympathetic- salivary gland, glands of tongue

27

X- Vagus

sensory- taste, back of mouth, pharynx, larynx, thoracic and abdominal
motor- muscles of larynx and pharynx
parasympathetic- thoracic and abdominal organs (digestive enzymes)

28

XI- Accessory

motor- trapezius, sternocleidomastoid

29

XII- Hypoglossal

motor- tongue muscles