suprahyoid muscles and extrinsic muscles of the tongue Flashcards Preview

gross anatomy 2 palmer > suprahyoid muscles and extrinsic muscles of the tongue > Flashcards

Flashcards in suprahyoid muscles and extrinsic muscles of the tongue Deck (17)
Loading flashcards...
1
Q

what is the origin and insertion of the digastric muscle?

A

O: posterior belly- mastoid process
anterior belly- digastric fossa
I: hyoid bone by intermediate tendon which connects them

2
Q

what is the origin and insertion of the mylohyoid muscle?

A

O: mylohyoid line
I: body of hyoid, median raphe

3
Q

what is the origin and insertion of the geniohyoid?

A

O: inferior mental spine
I: body of hyoid bone

4
Q

what is the origin and insertion of the genioglossus muscle?

A

O: superior mental spine
I: tip and entire undersurface of tongue

5
Q

what is the origin and insertion of the hyoglossus muscle?

A

O: body and greater horn of hyoid bone
I: sides of tongue

6
Q

a small portion of the hyoglossus muscle may take origin from the lesser horn of the hyoid bone. This is called?

A

chondroglossus

7
Q

the origin and insertion of the styloglossus muscle?

A

O: styloid process
I: sides of tongue

8
Q

what is the origin and insertion of the stylohyoid muscle?

A

O: styloid process
I: body of hyoid bone

9
Q

what is the nerve supply to the digastric muscle?

A

posterior belly-cervical branch of facial nerve

anterior belly- nerve to mylohyoid CN V

10
Q

what is the nerve supply to the mylohyoid muscle?

A

nerve to mylohyoid

11
Q

what is the nerve supply to the geniohyoid muscle?

A

C1 fibers through hypoglossal

12
Q

what is the nerve supply to the genioglossus, hyoglossus and styloglossus muscle?

A

hypoglossal nerve

13
Q

what is the nerve supply to the stylohyoid muscle?

A

facial nerve

14
Q

what is function of the digastric, mylohyoid, geniohyoid and stylohyoid muscles?

A

elevate the hyoid bone

15
Q

what is the function of the genioglossus muscle?

A

stick tongue out (draw forward and protrude)

16
Q

what is the function of the hyoglossus muscle?

A

draw tongue downward

17
Q

what is the function of the styloglossus muscle?

A

draw tongue up and back