+
Cards In This Set
| Front | Back |
|
What do the appendicular muscles control?
|
The movements of the upper and lower limbs, stabalize and control movements of pectoral and pelvic girdles
|
|
What groups are the pectoral girdle and upper limbs organized into?
|
1) muscles that move the pectoral girdle 2) muscles that move the glenohumeral joint/arm 3) arms and forearm muscles that move the elbow joint/forearm 4) forearm muscles that move the wrist joit, fingers 5) intrinsic muscles of the hand
|
|
Where do the muscles of the pectoral girdle originate?
|
The axial skeleton
|
|
Where do the muscles of the pectoral girdleinsert on?
|
On the scapula and clavicle
|
|
What do the muscles of the pectoral girdledo?
|
Both stabalize the scapula and move it to increase the arm's angle of movements
|
|
What do the superficial muscles of the thorax do?
|
Elevation, depression, protraction, or retraction
|
|
What are the anterior thoracic muscles?
|
Pectoralis minor, serratus anterior, and subclavius
|
|
Pectoralis minor
|
Thin flat, triangular muscle deep to the pectoralis major
|
|
What does the pectoralis minor do?
|
Helps depress &protract (pull anteriorly) the scapula
|
|
What happens when the pectoralis minor is contracting?
|
When your shoulders are hunched forward
|
|
Serratus anterior
|
Large flat, fan shaped muscle positioned btwn the ribs and scapula
|
|
What does the serratus anterior do?
|
Prime mover (agonist) in scapula protraction. helps stabalize the scapula against the posterior side of the rib cage
|
|
Subclavius
|
Small, cylindrical muscle
|
|
What does the subclavius do?
|
Extends from the 1st rib to the clavicle main action:stabalize and depress the clavivle
|
|
What are the posterior thoracic muscles?
|
The levator scapulae, rhomboid major, rhomboid minor, and trapezius
|
