Anatomy and Function of the Sternocleidomastoid Muscle Quiz

Test your knowledge on sternocleidomastoid muscle with questions about its anatomy, innervation, function, and clinical significance.

#1

Which muscle is responsible for the rotation of the head to the opposite side and flexion of the neck?

Sternocleidomastoid
Deltoid
Trapezius
Pectoralis major
#2

Where does the sternocleidomastoid muscle originate?

Mastoid process of the temporal bone
Clavicle
Sternal manubrium
Scapula
#3

What is the primary function of the sternocleidomastoid muscle?

Flexion of the shoulder
Extension of the head
Rotation of the trunk
Flexion of the neck
#4

Which anatomical landmark serves as the insertion point for the sternocleidomastoid muscle?

Mastoid process of the temporal bone
Sternal manubrium
Clavicle
Scapula
#5

What is the innervation of the sternocleidomastoid muscle?

Facial nerve
Vagus nerve
Accessory nerve
Trigeminal nerve
#6

Which artery supplies the sternocleidomastoid muscle?

Carotid artery
Brachial artery
Subclavian artery
Maxillary artery
#7

Which nerve roots contribute to the innervation of the sternocleidomastoid muscle?

Cervical nerves C1-C3
Cervical nerves C2-C4
Cervical nerves C3-C5
Cervical nerves C4-C6
#8

Which muscle acts as an antagonist to the sternocleidomastoid muscle?

Trapezius
Deltoid
Latissimus dorsi
Pectoralis minor
#9

What is the blood supply to the sternocleidomastoid muscle?

Brachial artery
Subclavian artery
Carotid artery
Thoracic aorta
#10

Which cervical vertebrae serve as the origin point for the sternocleidomastoid muscle?

C2 and C3
C3 and C4
C4 and C5
C5 and C6
#11

What is the action of the sternocleidomastoid muscle when only one side contracts?

Bilateral rotation of the head
Unilateral rotation of the head to the same side
Unilateral rotation of the head to the opposite side
Flexion of the neck
#12

What is the function of the sternocleidomastoid muscle when both sides contract together?

Unilateral rotation of the head to the opposite side
Bilateral rotation of the head
Flexion of the neck
Extension of the head
#13

Which muscle synergistically assists the sternocleidomastoid muscle in neck flexion?

Scalene muscles
Digastric muscle
Masseter muscle
Splenius capitis
#14

Which of the following is NOT a movement facilitated by the sternocleidomastoid muscle?

Rotation of the head
Flexion of the neck
Extension of the neck
Lateral flexion of the neck
#15

Which of the following muscles does the sternocleidomastoid muscle not directly interact with during movement?

Temporalis
Trapezius
Scalenes
Levator scapulae
#16

What is the embryological origin of the sternocleidomastoid muscle?

Mesoderm
Ectoderm
Endoderm
Neural crest

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