Anatomy 2040 CC Chapter 11

List that pharyngeal constrictors from innermost (deepest) to outermost (most superficial).

1. Superior constrictor 2. Middle constrictor 3. Inferior constrictor

External intercostals

11 pairs of oblique fibers between the ribs; project and anteroinferiorly

Muscles of respiration are located:

Anterior and posterior surfaces of the thorax

The location of the Orbicularis oris muscle is

Around the opening of the mouth

What describes the location of the orbicularis oculi muscle

Around the orbit

What describes the location of the levator palpebrae superioris muscle?

Attached to upper eyelid

Orbicularis oculi

Blinking

Diaphragm

Broad muscle; separates the thoracic and abdominopelvic cavities

Which muscles make up the superficial layer of the urogenital triangle?

Bulbospongiosus, ischiocavernosus, and superficial transverse perineal

Stylohyoid innervation

CN VII (facial nerve)

The innervation of the scalene muscles is:

Cervical spinal nerves.

The scalene muscles are innervated by which nerve(s)?

Cervical spine muscles

Sternothyroid innervation

Cervical spine nerves C1-C3

Which muscle draws the eyebrows together and create vertical wrinkle lines above the nose?

Corrugator supercilii

During exhalation, muscles of respiration

Decrease the space of the thoracic cavity.

What describes the location of the corrugator supercilli muscle?

Deep to the frontal belly of the occipitofrontalis muscle

The internal intercostals

Depress ribs only during forced exhalation.

Which muscle pulls the corners is the mouth inferiorly when it contracts?

Depressor anguli oris muscle

The dome-shaped muscle that separates the thoracic cavity from the abdominopelvic cavity is the ______.

Diaphragm

The functions of the mylohyoid and stylohyoid muscles are to:

Elevate the hyoid bone

Levator veil palatini muscle

Elevated soft palate when swallowing

Masseter

Elevates and protracts mandible

Temporalis

Elevates and retracts mandible

Palatopharyngeus muscle

Elevates pharynx and larynx

What are functions if the scalene muscles?

Elevation of first and second ribs during forced inhalation Flexion of the neck

Come traction of the external intercostal muscles

Expands the thoracic cavity

Functions of the trapezius muscle include:

Extension of the head and neck Movement if the pectoral girdle

Bilateral contraction of the quadratic lumborum muscles causes:

Extension of the vertebral column

Which muscle of the anal triangle originates from the perineal body?

External anal sphincter

The anterolateral abdominal muscles include:

External oblique muscle Internal oblique muscle Transverses abdominis muscle

Which muscles end in the suffix - glossus, meaning tongue?

Extrinsic tongue muscles

Geniohyoid innervation

First clavicle spinal nerve (C1) via CNXII (hypoglossal nerve)

The four pairs of muscles that collectively compress, support, and hold the abdominal organs in place also work together to _____ and rotate the vertebral column.

Flex

Pharyngeal constrictors

Force bolus into esophagus

Depressor anguli

Frowning

Which extrinsic tongue muscles are innervated by the hypoglossal nerve?

Genioglossus muscle Hyoglossus muscle Styloglossus muscle

From lateral to medial, indicate the order of erector spinae muscles of the vertebral column

Iliocostalis group Longissimus group Spinalis group

Which muscle inserts on the posterolateral part of the eye, elevates the eye, and turns the eye laterally when it contracts?

Inferior oblique muscle

As swallowing ends, the anterior neck muscles that contract to influence the position of the hyoid bone and the larynx are the ____ muscles.

Infrahyoid

Muscles of the anterior neck that are inferior to the hyoid bone are called ______ muscles.

Infrahyoid

Transversus thoracis

Inserts on coastal cartilages 2-6 ; Assist in decreasing diameter of the thoracic cavity

External oblique

Inserts on lines Alba by a broad aponeurosis and some to the iliac crest

Internal oblique

Inserts on the linea Alba, pubic crest, inferior rib surfaces of last 4 ribs,-'s costal cartilages or ribs 8-10

A transverse line drawn between the ____ ____ partitions the perineum into the anterior urogenital triangle and posterior anal triangle.

Ischial tuberosities

What correctly describes the digastric muscle?

It attaches to the hyoid bone It has 2 bellies It attaches to the mastoid portion of the temporal bone It depresses the mandible

Orbicularis oris

Kissing

Unilateral contraction of the quadratus contraction of the quadratus lumborum muscle causes:

Lateral flexion of the vertebral column

The largest and most important collection of muscles in the pelvic floor is the _____ _____ muscle.

Levator ani

The functions of the erector spinae muscles include:

Maintenance of posture Extension of vertebral column Lateral flexion of vertebral column

Anterior belly of digastric innervation

Mandibular division of CN V (trigeminal nerve)

Which muscle elevates and protracts the mandible during mastication?

Masseter muscle

The term ____ refers to the process of chewing.

Mastication

Which muscle adducts the eye, and is innervated by CN III (oculomotor nerve)?

Medial rectus

The major neck muscle called _____ _____ _____, which originates from the transverse process is the atlas and inserts into the inferior nuchal line.

Obliquus capitis superior

Move the head and neck originate where?

On the vertebral column, the thoracic cage, and pectoral girdle

When one "puckers up for a kiss" one is using the _____ _____ muscle.

Orbicularis oris

Transversus abdominis

Originates from the iliac crest, the cartilage of the inferior 6 ribs, the lumbar fascia, and the inguinal ligament

Rectus abdominis

Originates from the superior superior surface of the pubis near the symphysis.

The vagus nerve innervates which extrinsic tongue muscle?

Palatoglossus muscle

The ____ is commonly called the throat.

Pharynx

Muscles of the abdominal wall are innervated by:

Primary thoracic spinal nerves

The genioglossus muscle acts to ______ the tongue

Protract

Medial and lateral pterygoid

Protracts and moves mandible side to side.

What functions of the medial and lateral pterygoid muscles?

Protracts the mandible move the mandible side to side during chewing.

Bony landmarks of the perineum include:

Pubis symphysis anteriorly Coccyx posteriorly Both ischial tuberosities laterally

Most muscles is the pelvic floor are innervated by the _____ nerve.

Pudendal

Which muscles of the vertebral column originate in the iliac crest and iliolumbar ligament?

Quadratic lumborum

Frontal belly of occipitofrontalis

Raising eyebrows

What muscle elevates the ribs during inspiration?

Serratus posterior superior

Most muscles of facial expressions are innervated by the _____ cranial nerve.

Seventh

Zygomaticus major

Smiling

Muscles that move the vertebral column are innervated by:

Spinal nerves

Which group of erector spinae muscles insert on the spinous processes of vertebrae?

Spinalis group

The main muscles of the anterolateral neck are the ____ muscles and the three scalene muscles.

Sternocleidomastoid

The sternohyoid is attached to:

Sternum and hyoid bine

What are origin sites for facial muscles?

Superficial fascia of skin/skull bones

The main function of the muscles of the pelvic diaphragm is to:

Support the pelvic viscera Form the pelvic floor

The ___ muscles of the anterior neck are associated with the floor of the mouth.

Suprahyoid

What is considered muscle of mastication?

Temporalis, masseter, and the lateral and medial pterygoid

The four paired muscles of mastication are the _____ (a broad, fan-shaped muscle), the ____ (a short, thick muscle), and the lateral and medial _______.

Temporalis; masseter; pterygoid

Tensor veli palatini muscle

Tenses soft palate and opens auditory tubes when swallowing or yawning.

Platysma

Tensing skin of neck

Which muscle of the pharynx is innervated by the trigeminal nerve?

Tensor veli palatini muscle

Which muscle compresses the cheek against the teeth, as in chewing, when it contracts?

The buccinator

Which muscle raises the eyebrows and wrinkles the skin of the forehead when it contracts

The frontal belly of the occipitofrontalis

Which muscle attaches to the anteroinferior part of the sclera and pulls the eye inferiorly, as in looking down.

The inferior rectus muscle

What are considered extrinsic eye muscles?

The inferior rectus muscle Superior oblique muscles Medial rectus muscles.

The attachment sites of the sternocleidomastoid muscle include:

The mastoid process The clavicle The sternum.

Which muscle attaches to the anteromedial surface of the eye and pulls the eye medically?

The medial rectus muscle

Which muscle attaches to the lower ligand protrudes the lower lip, as in pouting, when it contracts?

The mentalis miscle

If you wrinkle your nose as in smelling A foul odor, you are contracting which muscle?

The procerus muscle

Which muscle elevates and retracts the tongue when it contracts?

The styolglossus muscle

Which muscle elevates and retracts the mandible during mastication?

The temporalis muscle

Serratus posterior inferior

Thin intermediate back muscle; splits into four separate muscle segments

Except for the diaphragm, the muscles of respiration are innervated by:

Thoracic spinal nervse

Which muscle extends from the thyroid cartilage of the larynx to the hyoid?

Thyrohyoid

Deep to the erector spinae, a group of muscles collectively called the _____ muscles connect and stabilize the vertebrae.

Transversospinalis

A small muscle that extends across the inner surface of the thoracic cage and inserts on ribs 2-6 is the ______.

Transversus thoracis muscle.

The obliquus suboccipital muscle function to:

Turn the head

Unilateral contraction of the splenius capitis, splenius cervicis, semisoinalis capitis, and longissimus capitis cause

Turning of the head

Identify all the muscles that elevate part or all of the upper lips.

Zygomaticus major and minor muscles Levator labii superioris muscle Lavator anguli oris muscle Risorius