Anatomy - Muscles Flashcards

Terms Definitions
Deep innervation
Nerve
Gracilis
Location: Leg
Frontalis innervation
Facial nerve
Flexor
Decreases Joint Angle
Greater Zygomatic
Location: Face
Extensor Pollicis Longus(action)
Extends thumb
contractibility
ability to shorten forcibly
Peroneus Tertius innervation
Deep peroneal nerve
Muscle Functions
Producing movement, maintaining posture, stabilizing joints, and generating heat (skeletal muscle = most responsible for creating heat)
posterior portion extends and laterally rotates arm
deltoid
Mentalis
The muscle that makes pouting possible.
biceps brachii
flexes and supinates the forearm
Syndesmosis
Fibrous joint that is amphiarthrotic. ligaments or interosseous membrane connect. (exp: proximal and distal tibiofibular joints)
extends and laterally rotates thigh
gluteus maximus
deltoids
a large, triangular muscle covering the joint of the shoulder, the action of which raises the arm away from the side of the body.
Archilles Tendon
Tendon named for a Greek hero.
Genioglossus action
Primarily protrudes tongue, but can depress or act in concert with other extrinsic muscles to retract tongue
adductor brevis
adducts and laterally rotates and flexes the thigh
distal of arm
origin-lateral supracondlyar ridge of humerusinser
elevates scapula and rotates it downward
levator scapulae
smooth muscle functions
helps maintain blood pressure, squeezes or propels substances through organs
mylohyoid
of, pertaining to, or situated near the lower molar teeth and the hyoid bone.
Latissimus dorsi innervation
Thoracodorsal nerve (C7-8) from the posterior cord of the brachial plexus
Tibialis Anterior action
Prime mover of dorsiflexion; inverts foot; assists in supporting medial longitudinal arch of foot
Aerobic Respiration
-95% of ATP comes from this-uses oxygen-slow and requires continuous delivery of oxygen and nutrients
Extensor Carpi Radialis Longus(origin)
Lateral supracondylar ridge of humerus
What kind of attachment: Epimysium is attached to periosteum of a bone or cartilage?
direct
mitochondria
an organelle in the cytoplasm of cells that functions in energy production.
Latissimus Dorsi origin
Vertebral spines from T7 to the sacrum, posterior third of the iliac crest, lower 3 or 4 ribs, sometimes from the inferior angle of the scapula
Peroneus Brevis origin and insertion
origin: Distal fibula shaft; insertion: By tendon running behind lateral malleolus to insert on proximal end of fifth metatarsal
Palmaris Longus action
Weak wrist flexor; may tense fascia of palm (palmar aponeurosis) during hand movements
lateral bending of trunk accomplished by
erector spinae: iliocostalis, longiggimus, and spinalis
platysma
a broad, thin muscle on each side of the neck, extending from the upper part of the shoulder to the corner of the mouth, the action of which wrinkles the skin of the neck and depresses the corner of the mouth.
FIRST MUSCLES TO BE PENETRATED WHEN NEEDLING THE FRONT OF THE THIGH
RECTUS FEMORIS (DEAD CENTER)
Flexor Digitorum Superficialis origin and insertion
origin: Medial epicondyle of humerus, coronoid process of ulna; shaft of radius; insertion: By four tendons into middle phalanges of fingers 2-5
3 effects of aerobic exercise
-increased muscle capillaries - increased # of mitochondria -increased myoglobin synthesis
Extensor Digiti Minimi(insertion)
Base of the 1st phalanx of the 5th finger
ext intercostals - inspiration p 347
more superficial layer that lifts rib cage annd increases thoracic volume to allow inspiration
8 general ways a muscle is named (L, S, RS, D, N, LA, A, RP)
location of muscle, shape, relative size, direction of muscle fibers, # of origins, locations of attachments, action, relative position
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