Sheep Brain and Spinal Cord Dissection Ear Model

Question 1

Three protective layers of connective tissue of meninges:

Answer 1

Dura, Arachnoid, and Pia Matte

Question 2

Dura mater

Answer 2

Outermost layer of dense
CT, continuous in brain and spinal cord

Question 3

Arachnoid Mater

Answer 3

Middle web-like layer,
deep to Dura mater, more delicate.
Projections form columns that join Pia
Mater.

Question 4

Subarachnoid space

Answer 4

CSF, larger blood
vessels

Question 5

Pia mater

Answer 5

Thin layer, delicate, highly
vascular. Intimately joined to arachnoid
layer. Follows external contour of
brain/spinal cord

Question 6

hypogloassal number

Answer 6

12

Question 7

spinal accessory number

Answer 7

11

Question 8

Hypoglossal innervation

Answer 8

Styloglossus, hyoglossus, genioglossus, and intrinsic muscles of the tongue

Question 9

Spinal accessory innervation

Answer 9

cleidomastoid, sternomastoid, trapezius muscles,

Question 10

Vagus function

Answer 10

pharynx, larynx,, esophagus, lungs, heart, abdominal viscera

Question 11

Glossopharyngeal function

Answer 11

pharyngeal muscles, sensory innervation of pharynx, teaspoons of a cereal, 1/3 of tongue, parotid gland

Question 12

Vestibulocochlear function

Answer 12

Vestibular branch works with organs of equilibrium, saccule, in utricle, semi circular canals

cochlear branch innervates the organs, organs of corti, in cochlea

Question 13

Abducens function

Answer 13

Lateral rectus

Question 14

facial function

Answer 14

Facial and gastric muscles, taste buds, of anterior 2/3 of tongue, mandibular, sublingual, lacrimal glands

Question 15

Trigeminal Function

Answer 15

Ophthalmic branch works with the skin and region of eye and nose, upper eyelid, eyeball, lacrimal glands

Maxillary branch works with palate, upper lip, upper teeth, vibrissae, skin of upper jaw and vicinity

Mandibular branch works with lower lip, lower teeth, PINNA, skin of lower jaw and cheek, masseter, temporal, PTERYGOID muscles

Question 16

Trochlear function

Answer 16

Works with dorsal oblique muscle

Question 17

Oculomotor function

Answer 17

Dorsal rectus, ventral rectus, medial rectus, ventral oblique, retractor bulbi, levator PALPEBRAE SUPERIORIS, intrinsic CILIARY muscles

Question 18

Optic function

Answer 18

Sensory fibers of the retina

Question 19

OLFACTORY function

Answer 19

Neurosensory cells of nasal epithelium

Question 20

Terminal number

Answer 20

Zero

Question 21

Terminal function

Answer 21

Neurosensory cells of nasal epithelium

Question 22

Telencephalon (forebrain) –

Answer 22

cerebrum and olfactory bulbs,
and corpus callosum (roof of lateral ventricles)

Question 23

Diencephalon (forebrain) –

Answer 23

epithalamus, thalamus,
hypothalamus, and ventral thalamus and the 3rd ventricle

Question 24

Mesencephalon (midbrain) –

Answer 24

tectum (roof of 3rd ventricle) =
corpora quadrigemina

Question 25

Metencephalon (hindbrain) –

Answer 25

pons, cerebellum, and portion of 4th ventricl

Question 26

Myelencephalon (hindbrain) –

Answer 26

medulla oblongata, 4th ventricle