s, 7. For each ground substance of the tissue. Refer to the textbook for assista

ID: 280321 • Letter: S

Question

s, 7. For each ground substance of the tissue. Refer to the textbook for assistance. one cercise 5.4: Identification and Classification of Supporting Connective Tissue . The three types of cartilage are differentiated from one another by the type and arrangement ofm . The pubic symphysis is composed of fibrocartilage. True/Faise) Which of the following is/are a type of bone tissue? (Check all that apply) 103 a. areola b. compact c. elastic d. reticular e. spongy ercise 5.5: Identification and Classification of Fluid Connective Tissue . The two types of fluid connective tissue are 14 and , The fibers in fluid connective tissue are

Explanation / Answer

Q-For each category of connective tissue listed in the following table , write the major cell types , Fiber types, and the characteristics of ground substance of the tissue.

Answer-

Connective tissue proper

Cartilage

Bone

Fluid connective tissue

Cells

Fibroblast, Fibrocytes, Macrophages, Mast cells

Chondrocytes

osteogenic cells, osteoblasts, osteoclasts, osteocytes

Blood and lymph, Blood consists of leucocytes (WBC), Erythrocytes (RBC), Thrombocytes. Lymph consists of all cells but lacks RBC

Fibres

collagen , reticular and elastic fibres

Perichondrium

Collagen

No fibres

Ground substance

Glycoproteins and proteoglycans, they help in supplying the nutrients

Proteoglycan and elastin fibres, they act as filling substances, act as lubricants, elastin helps in regaining shape and also acts as a load bearing tissue.

ground substance reduces friction, joins various

Plasma is the ground substance, it contains hormones, enzymes, antibodies which help in the defence process, contains anticoagulant heparin which does not allow blood to coagulate.

Connective tissue proper:-

It is of three types they are simple loose connective tissue, dense fibrous connective tissue, special connective tissue. Fibroblasts are the main cell types of this tissue, other cells like macrophages, mast cells, lymphocytes, adipose cells, plasma cells also found. An amorphous gel-like component is called the ground substance. It helps in the transportation of nutrients. The ground substance contains glycoproteins and proteoglycans.

Cartilage:-

They act as the filling substance found between cells in an organism. The combination of proteoglycans and collagen form cartilage, a strong tissue which is heavily hydrated (mostly due to the negatively charged sulphates in the glycosaminoglycan chains of the proteoglycans). They also help in binding cations (Like sodium, potassium and calcium) and water, and also regulate the movement of molecules through the matrix. They can also act as lubricants. Elastin is an elastic protein which helps in regaining the shape of the cells after getting stretched. They also acts as a load bearing tissues.

Bone:- Osteogenic cells found in bone helps in generating bone cells, they are undifferentiated and have high mitotic activity, these are the only bone cells which can divide. Immature osteogenic cells are found in the deep layers of the periosteum and in the bone marrow. When they differentiate, they develop into osteoblasts.

Ground substance allows the collagen fibres to slide with little friction, when force is applied. They also give mechanical support.

Fluid connective tissue:- Blood and Lymph are the major fluid connective tissue , Blood consists of three types of cells they are Erythrocytes (RBC ),Leucocytes (WBC), Thrombocytes. Lymph is similar to Blood, but it lacks erythrocytesNo fibres are found, Plasma is the ground substance, it contains hormones, enzymes, antibodies which help in the defence process, it contains anticoagulant like heparin which does not allow blood to clot.