Muscular System Quiz Ch. 11

Which of the following muscles is the prime mover in spitting out a mouthful of liquid

Buccinator

Ejaculation results from contraction of the ___ muscle

Bulbospongiosus

The word ___ in a muscle name indicates a function related to the head

Capitis

The ___ muscle, named for its two bellies, opens the mouth

Digastric

The prime mover of spinal extension is the ___

Erector spinae

The origin of the sternocleidomastoid is the mastoid process

False Mastoid process is the insertion not origin

Exhaling requires contraction of the internal intercostal muscle

False Normal exhalation is passive and does not employ the internal intercostals

All of the cranial nerves innervate muscles of the head and neck

False Only cranial nerves III,V,VII,XI,& XII innervate head and neck muscles

The digastric muscles form the floor of the mouth

False The floor of the mouth is formed by the mylohyoid muscle

The scalenes are superficial to the trapezius

False The scalenes are deep to the trpezius

Which of these is NOT a Suprahyoid muscle

Genioglossus

As its name implies, the ___ nerve controls several muscles of the tongue

Hypoglossal

The thyrohyoid muscle inserts on the thyroid cartilage of the ___

Larynx

Which of these muscles of the pelvic floor is the deepest

Levator Ani

The muscle that opens your eyes is the ___

Levator palpebrae superioris

The abdominal aponeuroses converge on a median fibrous band on the abdomen called the ___

Linea alba

The ___ produce lateral grinding movements of the jaw

Pterygoids

Which of these muscles is an extensor of the neck

Splenius Capitis

The ___ muscles diverge like a V from the middle of the upper thorax to insertions behind the ears

Sternocleidomastoid

The facial nerve supplies all of the following muscles except

The Mylohyoid

A muscle that aids in chewing without moving the mandible is

The buccinator

All of the following muscles act on the vertebral column except

The serratus posterior superior

The largest muscle of the upper back is the ___

Trapezius

Cutting the phrenic nerves would paralyze the prime mover of respiration

True

The abdominal oblique muscles rotate the vertebral column

True

The largest deep muscle of the lower back is the quadratus lumborum

True

The muscle used to stick out your tongue is the genioglossus

True

The orbicularis oculi and orbicularis oris are sphincters

True

The anterior half of the perineum is a region called the ___

Urogenital triangle

Which of the following muscles raises the upper lip

Zygomaticus minor