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