Connective Tissue

Question 1

How are connective tissue classified?

Answer 1

By ECM - extracelluar matrix. A non loving mesh work of supportive tissue.

Ecm might contain :

Collagen - over 20 different types of collagen make up the bike of supportive protein fibers

Elastin- another protein which provide and elastics component to some supportive be tissue.

Chondroitin - proteoglycan found in all cartilages. Forms a semi rigid elastic matrix. (Sugar with a little protein)

Connective tissue is the most abundant and widely distributed of the primary tissues. … Major functions of connective tissue include: 1) binding and supporting, 2) protecting, 3) insulating, 4) storing reserve fuel, and 5) transporting substances within the body. Connective tissues can have various levels of vascularity.

Question 2

What is the function of connective tissue ?

Answer 2

Primary support - tendons bones cartilage

Nutrition and immunity - blood is connective tissue

Storage - the bones serve as a reservoir of calcium and adipose tissue can store lipid

Morphology- the body’s shape is pretty much defined my connective tissue. Many characteristics of old age based on progressive failed of connective tissue (wrinkles, sore joints, osteoporosis)

Question 3

Types of loose of connective tissue ?

Answer 3

• collagen fibers are scarred and far apart. The tissue has some strength. But can easily stretch

Fascia - attached skin down to into underlying muscle and bone. Allows skin to move freely over bone.

Adipose. Modified fascia that contains adoptó tres thats stores lipids (fat)

Hemopoietic tissue - red bone marrow located within the marrow of certain bones. Produce blood cells that break off from it and float freely in the blood.

Question 4

Dense connective tissue

Answer 4

Much strong and resist stretch than loose.

Tendon - made up of many collagen fibers that are close-packed all aligned in the same direction. Strongest tissue. Connected to musle bone.

Dermis - supports skin. Dense irregular tissue Can resist stretch form all directions

Ligament - flexible - dense fibrous elastic connective tissue, containing elastin. Which attach to bone to bone or organ to bone. Strong but stretches to absorb stress.

Question 5

Cartilage types

Answer 5

Hyaline cartilage- contains large amounts of chondrotin. Found in joints. Wears away - older people lose this.

Fibrocartilage - contains both large amounts of chondrotin and collagen, makes it stronger and stiffer than hyaline cartilage. Found in weight bearing joints such as vertebral disks and knee menisci. When we go to bed we are an inch taller because of the compact of this disks.

Elastic cartilage / contains elastic as well as chondrotin and collagen. Forms tips of nose, external ear pinna and glottis. Ear. Throat.

Question 6

What are the 3 types of osseous tissues and what is their function?

Answer 6

Forms the skeleton -

Cancellous (spongy bone) : found in the beads of long bones ( muscle and legs.) lots of open spaces filled with marrow.

Haversian (compact) bone - very dense tissue with large amounts a of collagen and calcium hydroxyapatite. Strong and resilient- supports the body. Shafts of long bone.

Laminar bone - forms dense flat plates of bone. Found in skull and ribs.

Question 7

Describe the membranes and their function

Answer 7

Cutaneous membrane - the skin, sobers and protects the outer surface of the body.

Mucous membrane - the muscos, covers and protects the inner surfaces of the voy in the lungs and the alimentary canal. Goblet cells in the lining prof is a thick liquid called mucin. Mouth to anus.

Serous membrane - serosa, lines the inner surface of the body cavities like peritoneal cavity (pleura.) it produces a thin, watery serous fluid, which can fill the cavity formed by the serous membrane

Synovial membrane - lines the cavities between freely moving joints. The lining cells produce a thin, slippery fluid called synovium, which acts as a lubricant.

Question 8

What is the structure and function of membranes ?

Answer 8

All membranes are composed of some combination of epithelial lining tissue and supportive connective tissue.

Aside from protecting lining surface, the epithelium can also be secretory, producing a thin wAtery fluid that can act to lubricate and clean surfaced. For example the mucosa produces a secretion that protects the digestive tract

Tissues contain stem cells , which can undergo cell division and constantly replace parts of the membrane that are damaged or worn down today. For example, you lose about 15 cell layers a day.