GA2: Eye, ear, MoM, Heart, A&V

Question 1

This artery enters the orbit by passing through the optic foramen below the optic nerve, typically running next to the lateral rectus muscle.

Answer 1

Ophthalmic a

Question 2

Name the 4 portions of the ICA

Answer 2

Cervical
Petrous
Cavernous
Cerebral

Question 3

What percentage of blood is supplied to the brain by internal carotid artery.

Answer 3

80-90%

Question 4

This dilation functions to regulate systemic blood pressure a the origin of the ICA

Answer 4

Carotid Sinus

Question 5

This section of the the ICA is found within bone.

Answer 5

Petrous

Question 6

The three boundaries of the carotid triangle are:

Answer 6

Superior belly of Omohyoid
Posterior belly of digastric & sylohyoid
SCM

Question 7

What portion of the Internal Carotid Artery is one likely to hear their own heart beat?

Answer 7

Petrous

Question 8

What are the two branches off of the ICA in the Petrous portion?

Answer 8

Caroticotympanic aa.
Artery of the Pterygoid canal

Question 9

If ones eye looks down and out and fails to return to neutral, what Nerve is effected?

Answer 9

Abducens N. (CN VI)

Question 10

If ones eye looks down and out and fails to return to neutral, what is the likely cause?

Answer 10

Pressure on CNVI as a result of aneurysm of the ICA in the Cavernous portion.

Question 11

Three branches of arteries in the cavernous portion of the ICA are:

Answer 11

Cavernous
Hypophyseal
Meningeal

Question 12

What are the two terminal branches located in the cerebral portion of the ICA

Answer 12

anterior cerebral artery
Middle cerebral artery

Question 13

The cerebral portion of the ICA begins medial to what bone in the skull?

Answer 13

Sphenoid bone
(anterior crinoid process)

Question 14

The 5 arterial branches in the cerebral portion of the ICA are:

Answer 14

Anterior Cerebral
Middle Cerebral
Posterior communicating
Ophthalmic
Choroidal

Question 15

What is the largest branch in the ICA that forms an anastomoses with the anterior and posterior cerebral arteries?

Answer 15

Middle Cerebral artery

Question 16

Which artery is found on the lateral surface of temporal, frontal and partial lobes?

Answer 16

Middle cerebral artery (MCA)

Question 17

What artery is the most common location for the source of a TIA or stroke?

Answer 17

Middle Cerebral artery

Question 18

What is the medical name for the Circle of Willis?

Answer 18

Circulus anteriosus

Question 19

Circle of willis is found at the base of the Brain in the interpeduncular fossa that encircles what two parts of the brain?

Answer 19

Optic Chiasma
Pituitary Gland

Question 20

The first part of the subclavian artery has three branches. Name those branches.

Answer 20

Vertebral a.
Internal thoracic a.
Thyrocervical trunk

Question 21

Name the artery that branches off the second part of the subclavian a.

Answer 21

Costocervical trunk

Question 22

The costocervical trunk divides into two arteries. Name them.

Answer 22

Superior intercostal a.
Deep cervical a.

Question 23

The third part of the subclavian branches into this artery and runs with a nerve of the same name. What is that artery?

Answer 23

Dorasl scapular artery
(dorsal scapular nerve)

Question 24

The internal jugular vein has 6-7 tributaries, what are they?

Answer 24

Inferior Petrosal sinus
Pharyngeal
Common facial
Lingual
superior thyroid
Middle Thyroid
(occipital)

Question 25

Name the three tributaries of the external jugular vein:

Answer 25

Transverse cervical Superascapular anterior jugular

Question 26

IPCLSM(O)

Answer 26

Inferior Petrosal sinus Pharyngeal Common facial Lingual superior thyroid Middle Thyroid (occipital)

Question 27

SALFOPSM

Answer 27

Superior thyroid Ascending Pharyngeal Lingual Facial Occipital Posterior Auricular Superficial Temporal Maxilla

Question 28

1

Answer 28

Superior & Inferior Vena Cava

Question 29

2, 3, & 4

Answer 29

Right Atrium Tricuspid Right Ventricle

Question 30

5

Answer 30

Pulmonary semi-lunar valve

Question 31

6.

Answer 31

Pulmonary Artery (via pulmonary semi lunar valve)

Question 32

7

Answer 32

Pulmonary Veins (via Lungs)

Question 33

8, 9, 10

Answer 33

Left Atrium Bicuspid (mitral) Left Ventricle

Question 34

11

Answer 34

Aorta semi Lunar valve

Question 35

12

Answer 35

Aorta

Question 35

12

Answer 35

Aorta

Question 36

The SA node in the heart is referred to as what?

Answer 36

Pacemaker

Question 37

The AV node in the heart is referred to as what?

Answer 37

Gate Keeper

Question 38

The Fossa Ovalis developed from what part of the fetal heart?

Answer 38

Foramen Ovale

Question 39

This structure developed as the ducts arteriosus in the fetal heart. What is it?

Answer 39

Ligamentum anteriosum

Question 40

What Cranial Nerves innervate the eye?

Answer 40

CN: 2, 3, 4, 5, 6, 7

Question 41

What is the name for "the organ of hearing"?

Answer 41

Spiral organ of Corti

Question 42

Name the 4 contents of the Tympanic Cavity. (Middle ear)

Answer 42

Ossicles (Malleus, Incus, Stapes) Oval Window Round window Tensor Tympani Stapedius Chorda Tympani

Question 43

What is the hollowed-out fluid filled pathway located in the inner ear?

Answer 43

Osseous Labyrinth

Question 44

The fibrous layer of the eye is comprised of two structures: what are they?

Answer 44

Sclera & Cornea

Question 45

What part of the eye is responsible of the most refraction of light?

Answer 45

Cornea

Question 46

This area of the inner eye lacks rods and cones, known as the "blind spot" - what is it called?

Answer 46

Optic disc

Question 47

What area of the eye consists of only specialized cones for visual acuity?

Answer 47

Macula lutea

Question 48

Name the order of they eye from superficial to deep. (11 structures)

Answer 48

Cornea Epithelium Cornea Anterior Chamber Pupil (dilator pupil) posterior chamber Aqueous humor Canal of Schlemm Lens Vitreous body Choroid Retina

Question 49

What is damaged when one begins to experience macular degeneration?

Answer 49

Fovea Centralis

Question 50

Name the muscle and Nerve associated: 1.

Answer 50

Superior Oblique CN IV (Trochlear) abducts, depress, med. rotate

Question 51

Name the muscle and Nerve associated: 2. 5. 6.

Answer 51

All three: CN III - Oculomotor 2. Superior Rectus ( Adduct, Elevate, Med. Rotate) 5. Inferior Rectus (Adduct, depress, Lat. Rotate) 6 Medial Recuts

Question 52

Name the muscle and Nerve associated: 3.

Answer 52

Lateral Rectus CN VI (abducens) Abduct

Question 53

Name the muscle and Nerve associated: 4.

Answer 53

Inferior Oblique CN III (Oculomotor) (abduct, elevate, lat. rotate)

Question 53

Lateral Rectus is the first to show symptoms of:

Answer 53

DM, MS, Caratid Artery "H" Pattern - "out and Down"