chapter 5 - Skeletal System Mastering A&P

The pectoral girdles consist of two scapulae and one clavicle .two clavicles and two scapulae. clavicles and ribs. clavicles, scapulae, and ribs. two clavicles and one scapula.

.two clavicles and two scapulae.

Choose the answer that places the following key steps of endochondral bone formation into their appropriate order: 1. Blood vessels invade a central region. 2. Cartilage mold enlarges. 3. Chondrocytes die. 4. Ossification center forms. 5. Perichondrium converts to osteoblasts. 4; 1; 2; 3; 5 2; 3; 5; 1; 4 1; 4; 2; 3; 5 1; 2; 3; 4; 5 2; 3; 4; 1; 5

2; 3; 5; 1; 4

Choose the answer that places the following key steps of fracture repair into their appropriate order: 1. Bone replaces callus 2. Internal and external callus form 3. Extensive bleeding occurs 4. Fracture hematoma 3; 4; 1; 2 3; 4; 2; 1 1; 2; 3; 4 2; 3; 4; 1 1; 3; 2; 4

3; 4; 2; 1

Which of the following statements about bone and cartilage is TRUE? Bone is vascular, but cartilage is not. Both cartilage and bone are vascular. Neither bone nor cartilage is vascular. Cartilage is vascular, but bone is not.

Bone is vascular, but cartilage is not.

The soft spot most recognizable in newborns is the ________ fontanelle. frontal occipital mastoid sphenoid anterior

anterior

Appositional growth adds ________ to bones. weight but no volume no net change length volume but no weight girth

girth

The vertebrae that contribute to the pelvic girdle are called: sacral. lumbar. axis. atlas. thoracic.

sacral

The most common distortion of the vertebral curvature is fractured ribs. Marfan syndrome. kyphosis. scoliosis. lordosis.

scoliosis

How does spongy bone differ from compact bone? Spongy bone has trabeculae rather than osteons. Spongy bone is vascular; compact bone is not. Only compact bone has lamellae. Compact bone is vascular; spongy bone is not. Only compact bone has lacunae.

Spongy bone has trabeculae rather than osteons.

The bones of the wrist are called: carpals. tarsals. phalanges. metacarpals. metatarsals.

carpals

The tarsals of the foot are analogous to the ________ of the hand. metacarpals calcaneous tarsals carpals phalanges

carpals

Which of the following descriptors about the differences between a male and a female pelvis is FALSE? broader pubic angle in females less curvature in males wider outlet in females broader pelvis in females heavier pelvis in males

less curvature in males

Which of the following is NOT a function of the skeletal system? protecting the brain adjusting positions of the head, neck, and trunk performing respiratory movements supporting the organs of the abdominal cavity maintaining pH homeostasis

maintaining pH homeostasis

During elbow extension, which process and fossa are in contact? coranoid coracoid olecranon acronium radial

olecranon

The process of removing and recycling bone matrix is called ________ and is accomplished by ________. ossification; osteoblasts osteolysis; osteoblasts ossification; osteoclasts osteolysis; osteoclasts

osteolysis; osteoclasts