Anatomy

Shorten & pull on the bones they are attached to

The bone that does not move when muscle shortens (normally proximal)

The movable bone

Skeletal muscle fibers are arranged within a muscle in bundles called _________

The result of several muscles working at the same time

Most muscles are arranged in _______ _____ at joints

Contracts to cause the desired action

Stretches and yields to prime mover

Assist prime movers

Stabilize the origin of the prime mover

How are Skeletal Muscles Named

Facial Muscles:
Furrows the brow

Facial Muscle:
Closes the eye

Facial Muscle:
Puckers the lips

Facial Muscle:
Assists smiling

Facial Muscle:
Assists whistling, blowing, sucking and chewing

Facial Muscle:
Biting

Facial Muscle:
Chewing
Retract the mandible
Wiggle your ears

Neck Muscle:
Arises from sternum & clavicle
Inserts onto mastoid process of skull

Neck Muscle:
Contraction of one, laterally flexes the neck and rotates face in opposite direction

Neck Muscle
posterior, extends the neck

Breathing Muscles:
Breathing requires a change in the size of the _____

Breathing Muscles:
During inspiration _____ _____ increases in size

Breathing:
During inspiration-What lifts the ribs?

Breathing Muscles:
During inspiration - What contracts?

Breathing Muscle:
During expiration-What decreases in size?

Breathing Muscle:
During expiration-What relaxes?

Abdominal Wall Muscles

Vertebrae moving muscles:
What fibers run longitudinally?

What are the 3 groupings of the erector spinae

What extends the vertebral column?

Stabilizing the Pectoral Girdle:
Serratus anterior extends from ribs to inner surface of scapula (lowers shoulder)

Stabilizing the Pectoral Girdle:
Trapezius extends from skull & vertebrae to clavicle & scapula (elevates the shoulder

What muscles move the arm?
Extend from body wall to humerus.

Muscles that move the arm:
1. Arises from acromion & spine of scapula
2. Inserts on arm
3. Abducts, flexes & extends arm

Cross anterior surface of elbow joint & form flexor muscle compartmen

Two heads (scapula and coracoid process)

Flexors of the forearm:
Humerus to ulna
Flexes the forearm

Cross posterior surface of elbow joint & forms extensor muscle compartment

Long head arises scapula
Medial & lateral heads from humerus

Inserts on ulna
Extends forearm

Muscles of the Forearm:
Origin-humerus and insertion –radius
Flexes the forearm

Muscles of the forearm:
Plays a role in pronationand supination of the hand

Muscles that move the thigh:
Maximus
Medius
Minimus

Extends thigh at the hip

Abducts thigh

What flexes thigh at hip?

Arises lumbar vertebrae & ilium
Inserts on femus

Where does the adductor group of thigh muscle extend from?

Name the Adductor group of muscle

Name the 4 heads of the quadriceps femoris

What do the 4 heads fo the quadriceps femoris do?

Crosses hip joint medially
Extends leg

What flexor muscles of the leg are composed of the: Semimembranosus (medial)
Semitendinosus (medial)
Biceps femoris (lateral)

What muscles extend hip and flex knee?

Tear of origin of muscles from ischial tuberosity

Muscles of the Leg (Crural):
Anterior compartment of leg

Muscles of the leg (Crural):
Lateral compartment of leg

Pain or soreness on anterior tibia
Running on hard surfaces
Tearing of tendinous insertions into tibia

Muscles of the Calf (Sural):
What muscles insert onto calcaneus (Achilles tendon)