Muscles of the Body Diagram | Quizlet

TERM

Flexor Carpi

DEFINITION

Flexes and bends the wrist

TERM

Extensor Carpi

DEFINITION

Extends the hand at the wrist

TERM

Trapezius (Anterior)

DEFINITION

used to tilt and turn the head and neck, shrug, steady the shoulders, and twist the arms.

TERM

Latissimus dorsi (Anterior)

DEFINITION

is responsible for extension, adduction, transverse extension also known as horizontal abduction, flexion from an extended position, and (medial) internal rotation of the shoulder joint.

TERM

external oblique (Anterior)

DEFINITION

to pull the chest downwards and compress the abdominal cavity, which increases the intra-abdominal pressure

TERM

rectus abdominis

DEFINITION

muscle, also known as the "abdominals" or "abs", is a paired muscle running vertically on each side of the anterior wall of the human abdomen,

TERM

sartorius

DEFINITION

It is a long, thin, band-like muscle found in the anterior region of the thigh.

TERM

quadriceps femoris

DEFINITION

are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip.

TERM

extensor digitorum longus

DEFINITION

muscle is situated along the outside of the lower leg, just behind the tibialis anterior. It comes from close to the midline of the tibia and the shaft of the fibula.

TERM

gastrocnemius (Anterior)

DEFINITION

forms half of the calf muscle. Its function is plantar flexing the foot at the ankle joint and flexing the leg at the knee joint.

TERM

achilles tendon

DEFINITION

is a tendon of the back of the leg, and the thickest in the human body. It serves to attach the plantaris, gastrocnemius (calf) and soleus muscles to the calcaneus (heel) bone.

TERM

Hamstrings

DEFINITION

Also called the Biceps of the Femur cross and act upon two joints - the hip and the knee. Semitendinosus and semimembranosus extend the hip when the trunk is fixed; they also flex the knee and medially (inwardly) rotate the lower leg when the knee is bent.

TERM

biceps brachii

DEFINITION

Flexes the elbow.

TERM

pectoralis major

DEFINITION

has four actions which are primarily responsible for movement of the shoulder joint. The first action is flexion of the humerus, as in throwing a ball underhand, and in lifting a child. Secondly, it adducts the humerus, as when flapping the arms.

TERM

Triceps

DEFINITION

is an extensor muscle of the elbow joint and an antagonist of the biceps and brachialis muscles.

TERM

sternocleidomastoid (Anterior)

DEFINITION

of this muscle is to rotate the head to the opposite side or obliquely rotate the head. It also flexes the neck. When both sides of the muscle act together, it flexes the neck and extends the head.

TERM

Deltoid (Anterior)

DEFINITION

has three distinct functions that correspond to the three bands of muscle fibers. Contraction of the anterior fibers flexes and medially rotates the arm by pulling the humerus towards the clavicle.

TERM

Latissimus dorsi (Posterior)

DEFINITION

TERM

external oblique (Posterior)

DEFINITION

TERM

sternocleidomastoid (Posterior)

DEFINITION

TERM

Trapezius (Posterior)

DEFINITION

TERM

gastrocnemius (Posterior)

DEFINITION

TERM

Deltoid (posterior)

DEFINITION

TERM

gluteus maximus

DEFINITION

muscle is located in the buttocks and is regarded as one of the strongest muscles in the human body. It is connected to the coccyx, or tailbone, as well as other surrounding bones. This muscle is responsible for movement of the hip and thigh.