Shared Flashcard Set

Details

Individual muscles
yep
35
Anatomy
12th Grade
11/01/2012

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Cards

Term
Frontal
Definition
-Function: raises the eyebrows
-Origin: occipital bone
-Insertion: skin of eyebrows
Term
Orbicularis Oculi
Definition
-Function: closes the eyes
-Origin: maxilla & frontal bone
-Insertion: maxilla & frontal bone
***encircles the eyes
Term
Masseter
Definition
-Function: closes the jaw
-Origin: zygomatic bone
-Insertion: mandible
Term
Temporalis
Definition
-Function: closes the jaw
-Origin: temporal bone
-Insertion: mandible
Term
Sternocleidomastoid
Definition
-Function: rotates, flexes the head
-Origin: sternum
-Insertion: mastoid process
Term
Splenius Capitis
Definition
-Functions: extends the head
-Origin: cervical vertebrae
-Insertion: occipital bone
Term
Trapezius
Definition
-Function: adducts, raises the scapula
-Origin: occipital bone, upper vertebrae
-Insertion: scapula
Term
Serratus Anterior
Definition
-Function: abducts the scapula
-Origin: ribs
-Insertion: scapula
Term
Latissimus Dorsi
Definition
-Function: adducts the upper arm
-Origin: vertebrae, pelvis
-Insertion: humerus
Term
Pectoralis Major
Definition
-Function: adducts the upper arm
-Origin: sternum
-Insertion: humerus
Term
Deltoid
Definition
-Function: abducts the upper arm
-Origin: scapula
-Insertion: humerus
Term
Biceps Brachii
Definition
-Function: flexes the forearm
-Origin: scapula
-Insertion: radius
Term
Triceps Brachii
Definition
-Function: extends the forearm
-Origin: scapula/humerus
-Insertion: ulna
Term
External Oblique
Definition
-Function: compresses and flexes the trunk
-Origin: rib cage
-Insertion: pelvis
***interdigitates (interlocks like fingers of folded hands) with the serratus anterior on the side of the rib cage
Term
Rectus Abdominis
Definition
-Function: compresses and flexes the trunk
-Origin: pelvis
-Insertion: rib cage
Term
Iliopsoas (combination of the iliacus and psoas muscles)
Definition
-Function: flexes the thigh
-Origin: pelvis and vertebrae
-Insertion: femur
Term
Gluteus Maximus
Definition
-Function: extends the thigh
-Origin: pelvis
-Insertion: femur
Term
Adductors
Definition
-Function: adducts the thigh
-Origin: pelvis
-Insertion: femur
Term
Gluteus Medius
Definition
-Function: abducts the thigh
-Origin: pelvis
-Insertion: femur
Term
3 Hamstring Muscles
Definition
-Semimembranosus, Semitendinosus, Biceps Femoris
Term
Semimembranosus
Definition
-Function: flexes lower leg
-Origin: pelvis
-Insertion: tibia
Term
Semitendinosus
Definition
-Function: flexes lower leg
-Origin: pelvis
-Insertion: tibia
Term
Biceps Femoris
Definition
-Function: flexes lower leg
-Origin: pelvis, femur
-Insertion: fibula, tibia
Term
4 Quad Muscles
Definition
-Vastus Lateralis, Vastus Medialis, Vastus Intermedius, Rectus Femoris
Term
Vastus Lateralis
Definition
-Function: extends lower leg
-Origin: femur
-Insertion: tibia
Term
Vastus Medialis
Definition
-Function: extends lower leg
-Origin: femur
-Insertion: tibia
Term
Vastus Intermedius
Definition
-Function: extends lower leg
-Origin: femur
-Insertion: tibia
Term
Rectus Femoris
Definition
-Function: extends lower leg
-Origin: pelvis
-Insertion: tibia
Term
Tibialis Anterior
Definition
-Function: dorsiflexes the foot (toes up)
-Origin: tibia
-Insertion: metatarsals
Term
Gastrocnemius
Definition
-Functions: plantar flexes the foot (toes down)
-Origin: femur
-Insertion: calcaneus
Term
3 types of connective tissue
Definition
-Epimysium, Perimysium, Endomysium
-All three are continuous w/ tendons
Term
Types of Muscles
Definition
a.) skeletal
b.) smooth
c.) cardiac
Term
Functions of the Muscular System
Definition
a.) produce heat
b.) maintain posture
c.) help maintain body temp.
d.) movement
Term
How often is Skeletal Muscle replaced?
Definition
-every two weeks
Term
Motor Unit
Definition
-the motor neuron and the muscle it innervates
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