the muscles, origins, insertions, and actions
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169 Terms
What is the origin of the Frontalis muscle?
Epicranial aponeurosis
What is the insertion of the Frontalis muscle?
Supraorbital skin
What is the action of the Frontalis muscle?
Raises eyebrows
What is the origin of the Temporalis muscle?
Temporal bone
What is the insertion of the Temporalis muscle?
Coronoid process/ramus of mandible
What is the action of the Temporalis muscle?
Elevates and retracts mandible
What is the origin of the Orbicularis oculi muscle?
Medial wall of orbit
What is the insertion of the Orbicularis oculi muscle?
Circular path around orbit
What is the action of the Orbicularis oculi muscle?
Closes the eye
What is the origin of the Orbicularis oris muscle?
Muscles surrounding mouth
What is the insertion of the Orbicularis oris muscle?
Skin at corner of mouth
What is the action of the Orbicularis oris muscle?
Closes and protrudes lips (kissing)
What is the origin of the Masseter muscle?
Maxilla and zygomatic arch
What is the insertion of the Masseter muscle?
Angle and ramus of mandible
What is the action of the Masseter muscle?
Elevates mandible
What is the origin of the Sternocleidomastoid muscle?
Sternum and clavicle
What is the insertion of the Sternocleidomastoid muscle?
Mastoid process of temporal bone
What is the action of the Sternocleidomastoid muscle?
Flex cervical spine
What is the origin of the External intercostals muscle?
Inferior border of rib above
What is the insertion of the External intercostals muscle?
Superior border of rib below
What is the action of the External intercostals muscle?
Elevates ribs for inhalation
What is the origin of the Internal intercostals muscle?
Superior border of rib below
What is the insertion of the Internal intercostals muscle?
Inferior border of rib above
What is the action of the Internal intercostals muscle?
Draw ribs together for exhalation
What is the origin of the Serratus anterior muscle?
Ribs 1-8
What is the insertion of the Serratus anterior muscle?
Anteriomedial scapula
What is the action of the Serratus anterior muscle?
Protracts scapula (punching)
What is the origin of the External abdominal oblique muscle?
Ribs 5-12
What is the insertion of the External abdominal oblique muscle?
Iliac crest and linea alba
What is the action of the External abdominal oblique muscle?
Compresses abdomen, flex thoracolumbar spine
What is the origin of the Internal abdominal oblique muscle?
Iliac crest and linea alba
What is the insertion of the Internal abdominal oblique muscle?
Cartilage of ribs 7-10
What is the action of the Internal abdominal oblique muscle?
Compresses abdomen, flex thoracolumbar spine
What is the function of the Rectus abdominus?
Compresses abdomen, flex lumbar spine
What is the function of the Transversus abdominus?
Compresses abdomen
What is the function of the Latissimus dorsi?
Draws arm inferiorly and posteriorly
What is the function of the Trapezius?
Upward rotation and adduction of scapula
What is the function of the Supraspinatus?
Abducts arm at shoulder
What is the function of the Infraspinatus?
Laterally rotates arm at shoulder
What is the function of the Teres minor?
Extends shoulder
What is the function of the Teres major?
Extends shoulder
What is the function of the Subscapularis?
Medially rotates arm at shoulder
What is the function of the Deltoid?
Abducts arm at shoulder
What is the function of the Triceps brachii?
Extends elbow
What is the function of the Biceps brachii?
Flexes elbow
What is the function of the Brachialis?
Flexes elbow
Where is the Rectus abdominus located?
Pubic crest
Where is the Transversus abdominus located?
Iliac crest
Where is the Latissimus dorsi located?
Spines of thoracolumbar vertebrae
Where is the Trapezius located?
Occipital bone, Clavicle and scapula
Where is the Supraspinatus located?
Supraspinous fossa of scapula
Where is the Infraspinatus located?
Infraspinous fossa of scapula
Where is the Teres minor located?
Inferior lateral border of scapula
What is the Brachioradialis?
A muscle that flexes the elbow (especially at mid-pronation).
What is the Extensor carpi radialis?
A muscle that extends the carpus.
What is the Extensor digitorum?
A muscle that extends the digits (extends interphalangeal joints).
What is the Extensor carpi ulnaris?
A muscle that extends the carpus.
What is the Flexor carpi radialis?
A muscle that flexes the carpus.
What is the Gluteus maximus?
A muscle that extends the hip.
What is the Tensor fasciae latae?
A muscle that flexes and abducts the hip.
What is the Biceps femoris?
A muscle that extends the hip.
What is the Semimembranosus?
A muscle that extends the hip and flexes the knee.
What is the Semitendinosus?
A muscle that extends the hip.
What is the Rectus femoris?
A muscle that extends the knee and flexes the hip.
What is the Vastus lateralis?
A muscle that extends the knee.
What is the Distal lateral humerus?
The part of the humerus located away from the body.
What is the Radius?
One of the two bones in the forearm.
What is the Metacarpals 2 and 3?
The bones in the hand that connect the wrist to the fingers.
What is the Lateral epicondyle of humerus?
The bony prominence on the outer side of the elbow.
What is the Distal and middle phalanges of each finger?
The bones in the fingers located towards the tips.
What is the Metacarpal 5?
The bone in the hand that connects to the pinky finger.
What is the Iliac crest?
The upper curved edge of the hip bone.
What is the Fascia lata?
A layer of connective tissue that surrounds the thigh muscles.
What is the Tibia?
The larger bone in the lower leg, also known as the shinbone.
What is the Ischial tuberosity?
The bony prominence located at the base of the pelvis.
What is Vastus intermedius?
Muscle in the body of the femur that extends the knee.
What is Vastus medialis?
Muscle on the linea aspera of the femur that extends the knee.
What is Gastrocnemius?
Muscle on the lateral and medial condyle of the femur that plantar flexes the ankle and flexes the knee.
What is Fibularis longus?
Muscle that originates from the head of the fibula and inserts into the first metatarsal, and plantar flexes the ankle.
What is Fibularis brevis?
Muscle that originates from the distal fibula and inserts into the fifth metatarsal, and plantar flexes the ankle.
What is Tibialis anterior?
Muscle that originates from the lateral condyle and body of the tibia and inserts into the first metatarsal, and dorsiflexes the ankle.
What is Extensor digitorum longus?
Muscle that originates from the lateral condyle of the tibia and anterior fibula and inserts into the middle and distal phalanges of toes 2-5, and extends the digits (extends interphalangeal joints).
What is the origin of the Frontalis muscle?
Epicranial aponeurosis
What is the insertion of the Frontalis muscle?
Supraorbital skin
What is the action of the Frontalis muscle?
Raises eyebrows
What is the origin of the Temporalis muscle?
Temporal bone
What is the insertion of the Temporalis muscle?
Coronoid process/ramus of mandible
What is the action of the Temporalis muscle?
Elevates and retracts mandible
What is the origin of the Orbicularis oculi muscle?
Medial wall of orbit
What is the insertion of the Orbicularis oculi muscle?
Circular path around orbit
What is the action of the Orbicularis oculi muscle?
Closes the eye
What is the origin of the Orbicularis oris muscle?
Muscles surrounding mouth
What is the insertion of the Orbicularis oris muscle?
Skin at corner of mouth
What is the action of the Orbicularis oris muscle?
Closes and protrudes lips (kissing)
What is the origin of the Masseter muscle?
Maxilla and zygomatic arch
What is the insertion of the Masseter muscle?
Angle and ramus of mandible
What is the action of the Masseter muscle?
Elevates mandible
What is the origin of the Sternocleidomastoid muscle?
Sternum and clavicle
What is the insertion of the Sternocleidomastoid muscle?
Mastoid process of temporal bone
What is the action of the Sternocleidomastoid muscle?
Flex cervical spine