General Anatomy Pearls

Question 1

Patient presents with facial palsey.

When smiling, the lower right face will not work, all other quadrants work well. What is severed?

Answer 1

The left UMN of the facial nerve.

The upper face is spared because of a collateral innervation from the right side.

Question 2

What branches come from the thyrocervical trunk?

Answer 2

“TISS”
Inferior thyroid artery
Supra scapular
Superficial cervical artery

Question 3

What are the subclavian artery branches?

Answer 3

"VIT C and D"
Vertebral
Internal thoracic
Thyrocervical trunk - TISS
Costocervical artery (Superior intercostal artery and deep cervical artery)
Dorsal Scapular artery

Question 4

What are the branches from the external carotid artery?

Answer 4

Some Anatomists Like Freaking Out Poor Medical Students
Superior thyroid artery
Ascending pharyngeal artery
Lingual artery
Facial artery
Occipital artery 
Posterior Auricular artery
Maxillary artery
Superficial Temporal Artery

Question 5

What branch does the middle meningeal artery come from?

Answer 5

Comes from the maxillary artery.

Question 6

All intrinsic muscles of the larynx are innervated by…

Answer 6

Inferior laryngeal nerve from CN X

Question 7

The cricothyroid muscle is the exception in that it is innervated by….

Answer 7

It is an exception in that it is innervated by the superior laryngeal nerve from XN X all other larynx muscles are innervated by the inferior laryngeal nerve.

Question 8

The palatoglossus, Palatopharyngeus, Salpingopharyngeus, Uvula, Constrictors, Levator veli palantini are all innervated by

Answer 8

CN X pharyngeal branch

Question 9

The stylo pharyngeus is innervated by

Answer 9

CN 9!!

Glossopharyngeal

Question 10

Posterior digastric and Stylohyoid is innevated by….

Answer 10

CN 7 Pre parotid portion

Question 11

The anterior digastric and mylohyoid muscles are innervated by

Answer 11

V3 portion called the nerve to the mylohyoid.

Question 12

The genioglossus, hyoglossus, and styloglossus are all innervated by…

Answer 12

CN 12!

Hypoglossal

Question 13

SCM and Trapezius are both innervated by what nerve?

Answer 13

Both innervated by the accesory spinal CN 11

Question 14

Which nerve levels make up the Ansa cervicalis?

Answer 14

C1-C3

Question 15

What muscles are innervated by the Ansa Cervicalis?

Answer 15

The geniohyoid and thyrohyoid as well as the superior belly of the omohyoid and the sternothyroid.

“The Good Stern wOmon”

Question 16

What parasympathetics travel first at the edinger wesfal nucleus?

Answer 16

Edinger wesfall nucleus carries parasympathetics on CN III to the eye via the ciliary ganlgion allowing for pupillary constriction (sphincter)

Question 17

What parasympathetics travel through the superior salvitory nucleus?

Answer 17

CN 7 goes to the pterygopalantine ganlgion and ultimately transverses to the lacrimal glands.

Question 18

What parasympathetics travel through the inferior salvitory nucleus?

Answer 18

CN9 carrries this info to the otic ganglion and auriculo temporal nerve to the parotid gland.

Question 19

How does parasympathetic supply get to the submandibular gland?

Answer 19

CN7 travels to chorda tympani and then hooks onto the submandibular ganglion.