B. Directions: Match Column A with Column B to link the organs of the musculoskeletal

system to their respective functions. Write the letter in the blank before the number.

ACTIVITY NO. 1

Figure 3

Muscles do not push; they only pull. Therefore,

most muscles come in pairs. The muscles of your arm

are good examples of how muscles work as partners.

The two muscles of your arms are called biceps and

triceps (Figure 3). The biceps are a flexor muscle. It

produces a flexing or bending action by pulling the lower

arm bone at the joint towards the body. The triceps is an

extensor muscle. It builds straightening actions by

returning the bone to the relaxed position.

Column A

___1. a tough structure made up of connective

tissues surround by minerals

_2. a tough, flexible tissue that protects the

joints and facilitates movement.

_3. a soft tissue inside the bone that produces red

blood cells

_4. stretchable connective tissues that hold joints together

_____5. tough, connective tissues which connect the skeletal

muscles to the bones

Column B

A. bone

B. cartilage

C. ligaments

D. tendons

E. biceps

F. triceps

G. skeletal muscles

H. joint

I. bone marrow

J. cardiac muscles

1.Ligament, tough fibrous band of connective tissue that serves to support the internal organs and hold bones together in proper articulation at the joints.

2.Cartilage is a resilient and smooth elastic tissue, a rubber-like padding that covers and protects the ends of long bones at the joints and nerves, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. It is not as hard and rigid as bone, but it is much stiffer and much less flexible than muscle. The matrix of cartilage is made up of glycosaminoglycans, proteoglycans, collagen fibers and, sometimes, elastin.

3.Bone marrow is a semi-solid tissue found within the spongy or cancellous portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production or haematopoiesis. It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells. In adult humans, bone marrow is primarily

4.

5.Skeletal muscle is joined to bone by connective tissue called tendons. Tendons are specifically known as dense connective tissue. They are tough and...