Practical: Special Senses & Endocrine

What is the action of the lateral rectus muscle? what cranial nerve controls it?

• moves the eye laterally

• (VI) abducens

What is the action of the medial rectus muscle? what cranial nerve controls it?

• moves eye medially

• (III) oculomotor

What is the action of the superior rectus muscle? what cranial nerve controls it?

• elevates eye and turns it medially

• (III) oculomotor

What is the action of the inferior rectus muscle? what cranial nerve controls it?

• depresses eye and turns it medially

• (III) oculomotor

What is the action of the inferior oblique muscle? what cranial nerve controls it?

• elevates eye and turns it laterally

• (III) oculomotor

What is the action of the superior oblique muscle? what cranial nerve controls it?

• depresses eye and turns it laterally

• (IV) trochlear

Identify 1

superior rectus

Identify 2

superior oblique

Identify 3

medial rectus

Identify 4

inferior oblique

Identify 5

inferior rectus

Identify 6

lateral rectus

How do you know what side is medial vs lateral?

the superior oblique is medial (closer to the nose) → looks like a sling

Identify 2

Superior Rectus

Identify 3

Superior Oblique

Identify 4

Medial Rectus

Identify 6

Pupil

Identify 7

Iris

Identify 8

Sclera

Identify 9

Inferior Oblique

Identify 10

Lateral Rectus

Identify 11

Inferior Rectus

Identify 12

Optic Nerve

Identify 1

Sclera

Identify 2

Choroid

Identify 3

Retina

Identify 4

Optic Nerve

Identify 5

Optic DIsc

Identify 6

Ciliary body

Identify 7

Cornea

Identify 8

Iris

Identify 9

Pupil

Identify 10

Anterior Segment

Identify 11

Lens

Identify 12

Posterior Segment

What fluid is stored in the anterior segment of the eye?

Aqueous humor → watery

What fluid is stored in the posterior segment of the eye?

Vitreous humor → jelly like

How to know if you’re in the anterior or posterior segment of the eye?

• Anterior → in front of the lens

• Posterior → behind the lens

What is the retina attached to?

The optic disc

Identify 1 (clear part)

Cornea

Identify 2

Pupil

Identify 3 (colored part)

Iris

Identify 4 (white part)

Sclera

Identify 5

Choroid

Identify 6

Retina

Identify 7

Optic Disc

Identify 8

Retina

Identify 9

Ciliary Body

Identify 1

Ciliary Body

Identify 2

Retina

Identify 3

Choroid

Identify 4

Sclera

Identify 5

Lens

Identify 1

Retina

Identify 2

Tapetum

Identify 3

Choroid

Identify 4

Optic Disc

Identify 5

Sclera

Identify ?

Optic Disx

Identify ?

Optic Nerve

Identify the center clear part

Lens

Identify the striated part

Ciliary body

Identify the thin part lifting

Suspensory Ligaments

What are the suspensory ligaments attached to?

The lens connecting it to the ciliary body

Identify 1

Ciliary body

Identify 2 (the non striated black part)

Iris

Identify 3 (the hole)

Pupil

Identify 4 (the white part, usually clear)

lens

Identify A

Cornea

Lens Vs Cornea

• Both are clear

• The cornea is on the outside

• The lens is behind the iris, more interior

Identify 1

External Acoustic Meatus

Identify 2

Auditory Canal

Identify 3

Tympanic Membrane

Identify 4

Pharyngotympanic Tube

Identify 5

Cochlea

Identify 6

Vestibulocochlear nerve

Identify 7

Stapes

Identify 8

Incus

Identify 9

Malleus

Identify 10

Semicircular Canals

Identify 1

Semicircular Canals

Identify 2

vestibule

Identify 3

Vestibulocochlear nerve

Identify 4

Cochlea

Identify 5

Stapes

Identify 6

Incus

Identify 7

malleus

List the bones going left to right

stapes, malleus,incus

Identify 1

Pineal gland

Identify 2

Hypothalamus

Identify 3

Pituitary gland

Identify 4

Thyroid gland

Identify 5

Parathyroid glands

Identify 6

Thymus

Identify 7

Adrenal glands

Identify 8

pancreas

Identify 9

Ovary

Identify 10

Testis

What gland is this? Identify 1 & 2

• thyroid gland

  1. Colloid

  2. Follicular cells

What gland is this?

parathyroid gland