Appendicular Skeleton Flashcards
Appendicular skeleton composed of
126 bones
Bones of the shoulder girdle also called
Pectoral girdle
Composed of two bones that attach the upper limb to the axial skeleton
- Clavicle
- Scapula
• forms the arm
• single bone
Humerus
Head articulate with the glenoid cavity of the scapula
Proximal end articulation
Tro hlea and capitulum articulate with the bones of the forearm
Distal and articulation
Medial bone in anatomical position
Ulna
Lateral bone in anatomical position
Radius
Wrist bones /. 8 bones arranged in two rows of 4 bones in each hand
Carpals
Palm bones/ 5 per hand
Metacarpals
Finger and thumb
14 in each hand
In each finger, there are 3, bones
In the thquqm, there are only 2 bones
Phalanges
Formed by two coxal bones
Ossa coxae
Composed of 3 pairs of fused bones
Ilium, ischium, pubis
Two coxal bones, sacrum
Pelvic girdle
Two coxal bones, sacrum, coccyx
Pelvis
Pelvis protects several organs
• reproductive organs
• urinary bladder
• part of the large intestine
Is larger and more circular
Inlet
On the whole, and the bones are lighter and thinner
Shallower
Flare more laterally
Ilia
Is shorter and less curved
Sacrum
Spines are shorter and farther apart; this, the outlet is larger
Ischial spines
Is more rounded because the angle of the pubic arc is greater
Pubic arch
Thigh bone, the heaviest, strongest bone in the body
Femur
Head and articulates with the acetabulum of the coxal (hip) bone
Proximal and articulation
Lateral and medial condyles condyles articulate with the tibia in the lower leg
Dista end articulation
Shinbone,;1 larger and medially oriented
Tibia
Thin and sticklike; lateral to the tibia
Fibula
Tarsals have howany bones:
7
5 bones form the sole of the foot
Metatarsal
14 bones form the toes
Phalanges
Immovable joints
Synarthroses
Slightly movable joints
Amphiarthroses
Freely movable joints
Diarthroses
Generally immobile
Fibrous joints
Immovable or slightly movable
Cartilaginous joints
Freely movable
Synovial joints
Allow more movement that sutures but still immobile
Found on the distal ends of tibia and fibula
Syndesmoses
Found where the teeth meet the facial bones
Gomphoses
Found in epiphyseal plates of growing long bones
Synchrondrosis
Found in the pubic symphysis, intervertebral joints
Symphysis
Found in the joint cavity
Synovial fluid
Flattened fibrous sacs
Bursae
Elongated bursa that wraps around a tendon
Tendon sheath
Are fibrous membranes connecting the cranial bones
Fontanels
Results in kyphosis (also known as “dowager’s hump’’)
Vertebral collapse