Learn Smart Module 6
Describing the *digastric muscle*
*2 bellies*; anterior and posterior Depress the mandible Elevate the hyoid bone; attaches Attaches to mastoid process portion of temporal bone
Extrinsic eye muscles
*4 Rectus Muscles* Medial Lateral Inferior Superior *2 Oblique Muscles* Inferior Superior
From *lateral* to *medial*, indicate the order of the following erector spinae muscles of the vertebral column
1. Iliocostalis group 2. Longissimus group 3. Spinalis group
The functions of the *erector spinae muscles*
1. Maintenance of posture 2. Extension of vertebral column 3. Lateral flexion of vertebral column
Muscles that move the head and neck insertion
Bones of the cranium
Muscles of respiration are
Covered by more *superficial muscles* that move *upper limb*
In general, the *infrahyoid muscle* functions to
Depress the hyoid bone
The internal intercostals
Depress the ribs only during *forced* inhalation
The dome-shaped muscle that separates the thoracic cavity from the abdominopelvic cavity is the ________
Diaphragm
Which muscle(s) of *respiration* is/are innervated by the phrenic nerves (C3-C5)?
Diaphragm
The functons of the *mylohyoid and stylohyoid muscles* are to
Elevate the hyoid bone
The broad tendon between the *frontalis* and *occipitalis* muscles is called the _______ _________
Epicranial aponeurosis
Contraction of the *external intercostal muscles*
Expands the thoracic cavity
Bilateral contraction of the *splenius capitis, splenius cervicis, semispinalis capitis, and longissimus capitis* causes
Extension of the neck
The muscles that assist the serratus posterior superior muscles in expanding the thoracic cavity, by elevating the ribs, during inhalation are the
External intercostals
Which muscles end in the suffix *-glossus*, meaning tongue?
Extrinsic tongue muscles
The 4 pairs of muscles that collectively compress, support, and hold the abdominal organs in place also work together to _______ and rotate the vertebral column.
Flex
Functions of the *scalene muscles*
Flexion of the neck *Elevation* of the 1st and 2nd ribs
Which muscle inserts on a posterolateral part of the eye, elevates the eye, and turns the eye laterally when it contracts?
Inferior oblique muscle
Muscles of the anterior neck that are inferior to the hyoid bone are called ______ muscles
Infrahyoid
Muscles of the anterior neck that are inferior the hyoid bone are called
Infrahyoid muscles
The _______ muscles of the tongue curl, squeeze, and fold the tongue during chewing and speaking.
Intrinsic
The term _________ refers to the process of *chewing*
Mastication
The _______ is commonly called the *throat*
Pharynx
The *genioglossus muscle* acts to ________ the tongue
Protract
Functions of the *medial and lateral* pterygoid muscles?
Protract the mandible Elevate the mandible Move mandible side-to-side during chewing
The main muscles of the anterolateral neck are the ________ muscle and the three scalene muscles
Sternocleidomastoid
The muscle that is responsibl for the *wry neck* associated with congenital muscular torticollis is the _______
Sternocleidomastoid
Which extrinsic tongue muscles are innervated by the *hypoglossal nerve*?
Styloglossus muscle Genioglossus muscle Hyoglossus muscle
The ________ muscles of the anterior neck are associated with the floor of the mouth
Suprahyoid
Muscles of *mastication*
Temporalis Masseter Lateral pterygoid Medial pterygoid
Which muscle *elevates and protracts* the mandible during mastication
The masseter muscle
Which muscle attaches to the anteromedial surface of the eye and pulls the eye *medially*?
The medial rectus muscle
Which nerves innervates the diaphragm?
The phrenic nerve
Which muscle attaches to the anterosuperior part of the *schlera* and pulls the eye *superiorly* when it contracts?
The superior rectus muscle
Deep to the errector spinae, a group of muscles collectively called ________ muscles connect and stabilize the vertebrae
Transversospinalis
The *anterolateral* abdominal muscles include
Transversus abdominus External oblique Internal oblique
