10.2-10.3

Flexion of the head is accomplished by the ______ neck muscles.

Anterior

Flexion of the neck will occur when ______ of the sternocleidomastoid muscles contract.

Both

The muscles of the thorax are mostly involved in what action?

Breathing

Which of the following muscles act on the lips and skin around the mouth?

Buccinator, orbicularis oris, zygomaticus major, mentalis

The temporalis, masseter lateral pterygoid and the medial pterygoid are all considered muscles of ______.

Chewing

Pelvic diagram consists of

Coccygeus and levator ani

The orbicularis oris and buccinator muscles are both involved in ______.

Kissing

Lateral flexion is done by

Lateral neck muscles

The vertical band of tough connective tissue at the midline of the abdomen is the

Linea alba

Which muscle extends, rotates, and laterally flexes the neck?

Longissimus capitis

What muscles are considered the major muscles of mastication?

Masseter, temporalis, pterygoids

However the neck will rotate to the opposite side when _____ of the sternocleidomastoid muscles contracts.

One

The diamond-shaped area inferior to the pelvic diaphragm is referred to as the ______.

Perineum

Extension is done by

Posterior neck muscles

Which neck muscle attaches to the axis, atlas, and occipital bone?

Rectus capitis posterior

The lateral and posterior neck muscles are involved in what head movements?

Roation, lateral flexion, and extension

Contraction the sternocleidomastoid on one side will result in ______ and contraction of both sides together result in ______.

Rotation of the neck toward the opposite side, flexion of the neck

The orbicularis oculi and the occipitofrontalis both affect the ______.

Skin of the eyes and eyebrows

The abdominal wall is composed of several layers of muscles. The deepest layer is _____, the middle layer is the _____, and the most superficial layer is the _____.

Transversus abdominis, internal oblique, external oblique

True or False: The perineum is inferior to the pelvic diaphragm.

True