Musculoskeletal System

Question 1

Axial Skeleton

Answer 1

Skull, vertebral column, ribs, and sternum.

Question 2

Appendicular Skeleton

Answer 2

Shoulder girdle, bones of the arms, wrists, and hands. Pelvic girdle, and the bones of the legs, ankles, and feet.

Question 3

Fibrous Joints

Answer 3

Virtually no movement (skull)

Question 4

Cartilaginous Joints

Answer 4

Allow limited movement (intervertebral disks)

Question 5

Synovial Joints

Answer 5

Allow considerable movement (elbows and knees)

Question 6

Hyaline Cartilage

Answer 6

Smooth covering on articulated bone ends

Question 7

Uniaxial Joints

Answer 7

Operate as hinges, essentially rotating about only one axis (elbow)

Question 8

Biaxial Joints

Answer 8

Allow movement about two perpendicular axes (ankle & wrist)

Question 9

Multiaxial Joints

Answer 9

Allow movement about all three perpendicular axes that define space (shoulder and hip - ball & socket joints)

Question 10

Vertebral Column

Answer 10

7 cervical (neck); 12 thoracic (upper/middle back); 5 lumbar (lower back); 5 sacral (pelvis); 3 to 5 coccygeal vertebrae (below pelvis).

Question 11

Epimysium

Answer 11

Fibrous connective tissue covering the skeletal muscles.

Question 12

Bone Periosteum

Answer 12

Specialized connective tissue covering all bones.

Question 13

Proximal

Answer 13

Closer to trunk

Question 14

Distal

Answer 14

Farther from trunk

Question 15

Types of limb muscle attachments

Answer 15

Proximal & Distal

Question 16

Types of trunk muscle attachments

Answer 16

Superior & Inferior

Question 17

Superior

Answer 17

Closer to head

Question 18

Inferior

Answer 18

Closer to feet

Question 19

Describe Muscle Fibers

Answer 19

Long, cylindrical cells about the diameter of a hair

Question 20

Perimysium

Answer 20

Connective tissue that surrounds bundles of muscle fibers

Question 21

Endomysium

Answer 21

Connective tissue that surrounds individual muscle fibers

Question 22

Sarcolemma

Answer 22

Muscle fiber membrane

Question 23

Neuromuscular Junction

Answer 23

(Motor end plate) - The junction between a motor neuron (nerve cell) and the muscle fibers it innervates.

Question 24

Motor Unit

Answer 24

Motor neuron (nerve cell) and the muscle fibers it innervates

Question 25

Sarcomere

Answer 25

Smallest contractile unit of skeletal muscle

Question 26

Power Stroke

Answer 26

Energy for pulling action; actin filament pulled toward the center of the sarcomere.

Question 27

3 Types of connective tissue

Answer 27

Epimysium (outer layer), perimysium, and endomysium