Thorax, Head and Neck Muscles

Question 1

Sternohyoid attachments

Answer 1

From the posterior proximal clavicle and manubrium to the inferior border of the body of hyoid bone

Question 2

Sternothyroid attachments

Answer 2

From the posterior manubrium and 1st costal cartilages to the thyroid lamina

Question 3

Thyrohyoid attachments

Answer 3

From the thyroid lamina to the greater horn of the hyoid bone

Question 4

Omohyoid attachments

Answer 4

From the superior border of the scapula medial to the scapular notch to the lateral aspect of the hyoid bone (through a sling of the intermediate tendon), loosely associated with clavicle and 1st rib

Question 5

Mylohyoid attachments

Answer 5

From the mylohyoid line of the mandible to the midline raphe and anterior aspect of the body of the hyoid bone

Question 6

Geniohyoid attachments

Answer 6

From the inferior genial tubercle of the mandible to the anterior aspect of the body of the hyoid

Question 7

Anterior Digastric Attachments

Answer 7

From the digastric fossa of the mandible to the intermediate tendon, greater horn, and body of the hyoid

Question 8

Post Digastric Attachments

Answer 8

From the mastoid process of the temporal bone to the intermediate tendon, greater horn, and body of the hyoid

Question 9

Stylohyoid attachments

Answer 9

From the styloid process of the temporal bone to the greater horn of the hyoid bone

Question 10

Which anterior neck muscles depress the mandible?

Answer 10

Anterior digastric, Post digastric, Geniohyoid

Question 11

Which anterior neck muscles elevate the hyoid?

Answer 11

Anterior digastric, Post digastric, Geniohyoid, and Stylohyoid

Question 12

Which anterior neck muscle elevates the tongue?

Answer 12

Geniohyoid

Question 13

Which anterior neck muscles elevates the floor of the oral cavity?

Answer 13

Mylohyoid

Question 14

Which ant neck muscles depress the hyoid?

Answer 14

Omohyoid, Sternohyoid, Thyrohyoid

Question 15

What ant neck muscles depress the elevated larynx?

Answer 15

Stenothyroid

Question 16

Which ant neck muscle retracts the hyoid?

Answer 16

Stylohyoid (also elevates)

Question 17

Which muscle elevates the thyroid cartilage and depresses the hyoid bone?

Answer 17

Thyrohyoid

Question 18

Longus capitis attachments, innervation, and actions

Answer 18

from the ant tubercle of the transverse processes of cervical vertebrae to the basilar occipital bone

flexion of the head and neck and ipsilateral rotation

ventral rami of cervical spinal nerves (C1-3)

Question 19

Longus coli attachments, innervation, and actions

Answer 19

from the cervical vertebral bodies to the cervical vertebral bodies & transverse processes

flexion, lateral flexion of the neck and ipsilateral rotation

ventral rami of cervical spinal nerve (C2-7)

Question 20

anterior scalene attachments, innervation, and actions

Answer 20

from the anterior tubercles of middle cervical vertebrae to the scalene tubercle of the first rib

elevation of 1st rib during forced inspiration, flexion, lateral flexion, and contralateral rotation of the neck

lower ventral rami of cervical spinal nerves

Question 21

middle scalene attachments, innervation, and actions

Answer 21

from the transverse processes of cervical vertebrae to 1st rib

elevation of 1st rib during forced inspiration, lateral flexion and contralateral rotation of the neck

lower ventral rami of cervical spinal nerves

Question 22

posterior scalene attachments, innervation, and actions

Answer 22

from the lower cervical transverse processes to the 2nd rib

elevation of the rib during forced inspiration and lateral flexion and contralateral rotation of the neck

ventral rami of cervical spinal nerves (C6-8)

Question 23

Innervation of anterior neck muscles by CN VII of which ant neck muscles

Answer 23

stylohyoid and posterior digastric

Question 24

Innervation from V3 of which ant neck muscles, and what specific branches

Answer 24

mylohyoid and ant digastric by the nerve to mylohyoid which branches of inferior alveolar n.

Question 25

Innervation from ansa cervicalis of which ant neck muscles and what spinal segments

Answer 25

inf and sup omohyoid, sternohyoid, sternothyroid

C1-C3

Question 26

Innervation from ventral ramus of C1 via the CN XII of which muscles

Answer 26

geniohyoid and thyrohyoid