NCLEX : Muscle Identification
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Example Questions
Example Question #35 : Musculoskeletal System And Anatomy
Which of the following is not a part of the erector spinae muscle group?
The trapezius
The iliocostalis
The longissimus
The spinalis
The trapezius
The main muscle groups that make up the erector spinae are the iliocostalis muscles, the longissimus muscles, and the spinalis. The trapezius is not a part of the erector spinae group.
Example Question #31 : Musculoskeletal System And Anatomy
Which of the following is a muscle of mastication?
All of these
The temporalis
The medial pterygoid
The lateral pterygoid
All of these
Mastication relies on four major muscles: the masseter, the temporalis, the medial pterygoid, and the lateral pterygoid.
Example Question #32 : Musculoskeletal System And Anatomy
Which of the following cranial nerve (CN) innervates the genioglossus?
CN XII (the hypoglossal nerve)
CN IX (the glossopharyngeal nerve)
CN IV (the trochlear nerve)
CN VII (the facial nerve)
CN XII (the hypoglossal nerve)
The genioglossus, the main muscle that protrudes the tongue, is innervated by the hypoglossal nerve, or CN XII.
Example Question #31 : Musculoskeletal System And Anatomy
What is the origin of the inferior oblique muscle of the eye?
The annulus of Zinn
The maxilla
The sphenoid bone
The infra-orbital margin
The maxilla
The inferior oblique muscle of the eye, an extrinsic muscle that externally rotates and abducts the eye, has it's origin on the orbital surface of the maxilla.
Example Question #31 : Musculoskeletal System And Anatomy
What is the action of the sternocleidomastoid?
Extend the neck
Laterally flex the neck
All of these are correct
Accessory respiratory muscle
All of these are correct
The sternocleidomastoid, a long muscle that originates on the manubrium and the clavicle and inserts into the mastoid process, has several functions: when functioning unilaterally, it rotates the head, flexes the neck, and laterally flexes the neck. When functioning bilaterally, this muscle also extends the neck and is an accessory respiratory muscle.
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