Question

Classify connective tissue and give a brief note on it.

Answer 1

Connective tissue:

1. connective tissue is the specialized living tissue of animal cells that helps in connecting different parts of the body.
2. the main portion of connective tissue is gel-type homogenous substances called matrix.
3. Depending on the nature of the matrix, they are of 3 types namely connective tissue proper, skeletal tissue, and vascular tissue.

Connective tissue proper:

1. It is a type of connective tissue that contains a jelly-type matrix.
2. It is of 2 types mainly loose connective tissue and dense connective tissue.
3. Loose connective tissue contains more matrix and fewer fibres. It is further classified into areolar tissue and adipose tissue.
4. Areolar tissue is cellular and has a loose matrix that contains two types of fibres i.e. white collagen fibres and yellow elastic fibres.
5. Adipose tissue is the tissue that stores fats.
6. Dense connective tissue is the tissue that has less matrix and more fibres. It is of 3 types namely ligaments, tendons, and aponeuroses.
7. Ligaments are dense yellow fibrous connective tissue that connects a bone to bone and provides strength to joints.
8. Tendons are cord-like dense white fibrous connective tissue that connects muscle to bone.
9. Aponeuroses are the broadsheets of fibrous, collagen connective tissue that help in covering different flat muscles.

Skeletal tissue:

1. These are the tissue that consists of a solid matrix and they provide support and protection to the skeletal system and body.
2. It is of two types namely bones and cartilage.
3. Bones are the hardest tissue of the body and form the framework of the body. the bones store calcium and phosphate.
4. Cartilage is the flexible connective tissue that is capable of rapid and continuous growth. It is found in nose tip, epiglottis, ear pinna, etc.

Vascular tissue:

1. These are connective tissues that are responsible for the transportation of body fluids throughout the body. It includes blood and lymph.
2. Blood is a red-colored, sticky and vascular fluid that consists of blood plasma and blood cells that flows through blood vessels.
3. Blood cells are the cells that contain different corpuscles and they are of 3 types namely RBC(red blood corpuscles), WBC(white blood corpuscles), and blood platelets.
4. Red blood cells also known as erythrocytes are biconcave, circular, and lack a nucleus. They contain the pigment hemoglobin which provides red color to the blood and helps in the transportation of oxygen.
5. WBC is also called leucocytes which lack the pigment hemoglobin. They contain a nucleus and are amoeboid in shape and help in removing microorganisms and dead cells from the body. They are of 2 types agranulocytes and granulocytes.
6. Blood platelets are non-nucleated, small, and colorless cells that are responsible for the coagulation of blood. They are also known as thrombocytes.