A&P 1.08 Flashcards
Pectoralis major
A, O, I
Clavicular head
Clavicular head
O - medial half of the clavicle
I - distal attachment: lateral lip of the bicipital grove (intertubercular groove)of the humerus
A - flexion of the shoulder
Named for size and location
Pectoral major
A, O, I
Sternocostal head
O: (proximal/axial attachment)manubrium & body of sternum. 1st to 6 or 7 costal cartilages
I: (distal attachment) lateral lip of the bicipital groove of the humerus
A: extension of the shoulder
Pectoralis major
Actions of both heads - synergysts
- Adduction
- Horizontal adduction
- Medial rotation
Types of ribs
True ribs - 7 have their own costal cartilage
False ribs - 3 share costal cartilage
Floating ribs - 2 without attachment to the sternum
Holistic standpoint
Defined
Focuses on seeing and treating the body as a whole and how cells of the body communicate together
Sternum parts
3
Manubrium
Body
Xiphoid
Four major tissue types
Connective
Muscle
Epithelial
Nervous
Three communicating networks
Fibrous (fascial) network
Neural Network
Fluid network
Fibrous (fascial) network
Communicates how?
Communicates mechanical information via tugs & pulls
Neural network
Communicates how?
Communicates coded electrical information
Fluid network
Communicates how
Communicates via hormones/chemicals