AXIAL MUSCLES Flashcards
This is a fundamental type of tissue; for locomotion & movement of the various parts of the body; it is highly cellular & well-vascularized
Contractility
It is voluntary and striated; found in the skeletons & mmjoints of skeletons via tendons.
Skeletal muscles
This is involuntary and striated; found in the heart muscle.
Cardiac muscle
This is involuntary and non-striated; found in the walls of hollow internal organs
Smooth muscle
PART OF SKELETAL MUSCLE:
This is the stationary attachment of muscle usually to the bone
Origin
PART OF SKELETAL MUSCLE:
This is the movable attachment of the muscle.
Insertion
PART OF SKELETAL MUSCLE:
This is the fleshy part of the muscle
Belly
MUSCLE GROUPS ACCORDING TO THEIR PRIMARY ACTIONS:
This is contraction is mainly responsible for producing a particular movement
EX: BICEPS BRACHII- flexion of forearm
Prime mover or agonist
MUSCLE GROUPS ACCORDING TO THEIR PRIMARY ACTIONS:
This opposes the action of the agonist
EX: TRICEPS BRACHII- extends forearm
Antagonist
MUSCLE GROUPS ACCORDING TO THEIR PRIMARY ACTIONS:
This assists prime movers in its action; it reduce excess & unnecessary motion
EX: Latissimus Dorsi & Teres Major
Synergists
What are the muscles of the head?
Muscles of facial expression, Extraocular muscles, Muscles of mastication, Muscles of the tongue, Muscles of middle ear, Muscles of soft palate, Muscles of pharynx
This compresses the cheeks, trumpeteer’s muscle; chewing
Buccinator
This pulls your lower lip down or to the side; lowering lower lip
LEVATOR LABII INFERIORIS (QUADRANGULARIS)
This is the elevation of the upper lip; raising upper lip
LEVATOR LABII SUPERIORIS
This is the protrusion of the lower lip and elevates the skin of the chin; raising chin & protruding lower lip
MENTALIS
This purses lips; “kissing muscle”; closing & pursing lips, pouting, grimacing
ORBICULARIS ORIS
This is pulling the corner of the mouth laterally via its contraction in an outward and upward motion; stretching lips
RISORIUS
This depresses angle of mouth; frowning
DEPRESSOR ANGULI ORIS (TRIANGULARIS)
This pulls the angle of the mouth superolaterally; sweet smile; laughing muscle; smiling
ZYGOMATICUS MAJOR
This elevates upper lip; raising upper lip, assisting smiling
ZYGOMATICUS MINOR
Raising neck skin, grimacing
PLATYSMA
Frowning; draws eyebrows medially
CORRUGATOR SUPERCILII
Surprise
EPICRANIAL
Closing eyelids
ORBICULARIS OCULI
This wrinkles root of nose
Procerus
This compresses nose
EX: sniffing
Nasalis
This move ears to different directions
Auricular muscles
This moves scalp forward & backward
Epicranius
The transverse wrinkle of forehead
Frontalis
This moves the scalp back
Occipitalis
This move eyeball in different directions
Extraocular muscle
This is supplied by CN III
RECTUS MUSCLES (INFERIOR, MEDIAL,
SUPERIOR, INFERIOR)
This is supplied by CN IV
SUPERIOR OBLIQUE
This is supplied by CN VI
LATERAL RECTUS
This is supplied by CN III
LEVATOR PALPEBRAE SUPERIORIS
This is supplied by CN V
Muscles of mastication
This elevates mandible
MASSETER
This elevates & retracts mandible
TEMPORALIS
This elevates mandible, closes jaws, moves mandible side to side
MEDIAL PTERYGOID
This opens jaws, protrudes mandible side to side
LATERAL PTERYGOID
MUSCLES OF THE TONGUE:
This forms the shape & body of the tongue
Intrinsic muscles
MUSCLES OF THE TONGUE:
This is attached to other structures aside from the tongue
Extrinsic muscles
EXTRINSIC MUSCLES OF THE TONGUE:
This protrudes tongue
GENIOGLOSSUS
EXTRINSIC MUSCLES OF THE TONGUE:
This depress & retracts the tongue
HYOGLOSSUS
EXTRINSIC MUSCLES OF THE TONGUE:
This elevates tongue, depress soft palate
PALATOGLOSSUS
EXTRINSIC MUSCLES OF THE TONGUE:
This moves the tongue upward & backward
STYLOGLOSSUS
This is contract in response to loud sound
Muscles of the middle ear
MUSCLES OF THE MIDDLE EAR:
This weakens vibration of stapes
STAPEDIUS
MUSCLES OF THE MIDDLE EAR:
This weakens vibration of malleus
TENSOR TYMPANI
This is supplied by pharyngeal plexus (CN IX, X, XI & sympathetic nerve) except tensor veli palatini (CN V).
Muscles of the soft palate
What are the 5 muscles of soft palate?
Tensor veli tympani, Levator levi palatini, Palatoglossus, Palatopharyngeus, Musculus uvulae
This functions for swallowing; supplied by pharyngeal plexus except stylopharyngeus (CN IX).
Muscles of the pharynx
What are the 4 muscles of the pharynx?
Superior, middle, inferior constrictor, Salphingopharyngeus, Palatopharyngeus, Stylopharyngeus
MUSCLES OF THE NECK:
What is the superficial muscle of the neck?
Platysma
MUSCLES OF THE NECK:
What is the later neck muscle?
Sternocleidomastoid
MUSCLES OF THE NECK:
This elevates hyoid & depress mandible; consists of digastric, stylohyoid, mylohyoid, and geniohyoid
Suprahyoid muscles
This is the region located at the front of the neck.
Anterior triangle
BOUNDARIES OF ANTERIOR TRIANGLE:
This is the inferior border of the mandible
Superiorly
BOUNDARIES OF ANTERIOR TRIANGLE:
This is the sternocleidomastoid
Laterally
BOUNDARIES OF ANTERIOR TRIANGLE:
This is the sagittal line down the midline of the neck
Medially
SUBDIVISIONS OF CAROTID TRIANGLE:
This is the posterior belly of the digastric muscle
Superior
SUBDIVISIONS OF CAROTID TRIANGLE:
This is the medial border of the sternocleidomastoid
Lateral
SUBDIVISIONS OF CAROTID TRIANGLE:
This is the superior belly of the omohyoid muscle
Inferior
SUBMENTAL TRIANGLE:
This is the hyoid bone
Inferiorly
SUBMENTAL TRIANGLE:
This is the midline of the neck
Medially
SUBMENTAL TRIANGLE:
This is the anterior belly of the digastric
Laterally
SUBMANDIBULAR TRIANGLE:
Superiorly
Body of the mandible
SUBMANDIBULAR TRIANGLE:
Anteriorly
Anterior belly of the digastric muscle
SUBMANDIBULAR TRIANGLE:
Posteriorly
Posterior belly of the digastric muscle
This is located in the lateral aspect of the neck
Posterior angle
BOUNDARIES OF POSTERIOR ANGLE:
This is the posterior border of the sternocleidomastoid
Anterior
BOUNDARIES OF POSTERIOR ANGLE:
This is the anterior border of the trapezius muscle
Posterior
BOUNDARIES OF POSTERIOR ANGLE:
This is the middle 1/3 of the clavicle.
Inferior
SUBDIVISIONS OF POSTERIOR ANGLE:
This is the larger, superior part.
Occipital triangle
SUBDIVISIONS OF POSTERIOR ANGLE:
This is the inferior triangle & contains the distal portion of the subclavian artery; it is also known as the omoclavicular or supraclavicular triangle
Subclavian triangle
SUBDIVISIONS OF POSTERIOR ANGLE:
This depresses hyoid & elevate larynx; it consists of: Sternohyoid, Sternothyroid, Thyrohyoid, and Omohyoid
Infrahyoid muscles (strap muscle)
SUBDIVISIONS OF POSTERIOR ANGLE:
This is anterior to the vertebrae; it flexes neck; it consists of: Longus coli, Longus capitis, Rectus capitis anterior, Rectus capitis lateralis
Prevertebral muscles
SUBDIVISIONS OF POSTERIOR ANGLE:
This is the lateral flexors of the neck; it consists of: SCALENE ANTERIOR, SCALENE MEDIUS (attached to 1st rib), and SCALENE POSTERIOR (attached to 2nd rib)
Lateral vertebral muscles
What are the 4 muscles in anterior vertebral (prevertebral) muscles?
Longus coli, Longus capitis, Rectus capitus anterior, and Rectus capitus lateralis
This is underneath semispinalis capitis; it is supplied by occipital nerve
Suboccipital muscles
What are the 4 muscles in suboccipital muscles?
Rectus capitis posterior major, Rectus capitis posterior minor, Obliquus capitis inferior, and Obliquus capitis superior
This is attached to other structures aside from laryngeal cartilage; consists of sternothyroid and thyrohyoid
Intrinsic of laryngeal muscles
INTRINSIC CN X:
This closes laryngeal inlet
OBLIQUE ARYTENOID & ARYEPIGLOTTIC
INTRINSIC CN X:
This tenses vocal fold
CRICOTHYROID
INTRINSIC CN X:
This relaxes vocal fold
THYROARYTENOID
INTRINSIC CN X:
This adducts vocal fold
LATERAL CRICOARYTENOID & TRANVERSE ARYTENOID
INTRINSIC CN X:
This abducts vocal folds
POSTERIOR CRICOARYTENOID
This is primarily responsible for changing the volume of the thoracic cavity during respiration.
Muscles of the thoracic wall
Give the 5 muscles of the thoracic wall
External interossei, Internal intercostal, Innermost intercostalis, Tranversus thoracis, Subcostalis
This is the lateral abdominal muscles; it flexes trunk & increase abdominal cavity pressure
Antero muscles of the abdominal wall
Give the 5 muscles of the antero abdominal wall
External & internal oblique, Transversus abdominis, Rectus abdominis, Pyramidalis
Give the 3 muscles of posterior abdominal muscles.
quadratus lumborum, psoas major & minor, iliacus
MUSCLES OF PELVIS:
This is the posterior wall of pelvic cavity
PYRIFORMIS
MUSCLES OF PELVIS:
This is the lateral wall
OBTURATOR INTERNUS
MUSCLES OF PELVIS:
This is the pelvic diaphragm
LEVATOR ANI & COCCYGEUS