Connective Tissue and cartilage (first midterm)

Question 1

Define, give function, and location of Areolar Tissue (Loose Connective Tissue)

Answer 1

• Gell-like Matrix with all three fiber types (Elastic,Collagen,Reticular)
• Wraps and cushions organs, holds and conveys tissue fluid, plays important role in inflammation
• Widely distributed under epithelia of body

Question 2

Define, give function, and location of Adipose Tissue (Loose connective Tissue)

Answer 2

• Matrix as in areolar, but very sparse;closely packed fat cells (adipocytes) have nucleus pushed to the side by large fat droplets
• provides reserve food fuel; insulates against heat loss; supports and protects organs
• Under skin in the hypodermis; around kidneys and eyeballs; with abs and boobs

Question 3

Define, give function, and location of Reticular CT (Loose CT)

Answer 3

• Network of fibers in a loose ground substance
• Fibers form a soft internal skeleton (stroma) that supports other cell types including white blood cells, mast cells, and macrophages
• Lymphoid organs (lymph nodes, bone marrow, and spleen)

Question 4

Define, give function, and location of Dense REGULAR CT

Answer 4

• Primarily parallel collagen fibers; a few elastic fibers; major cell type is the fibroblast
• attaches muscles to bones or to muscles; attaches bones to bones, withstands great tensile stress when pulling force is applied in one direction
• tendons, most ligaments, aponeuroses

Question 5

Define, give function, and location of Dense IRREGULAR CT

Answer 5

• Primarily irregularly arranged collagen fibers; some elastic fibers; major cell type is the fibroblast
• able to withstand tension exerted in many directions; provides structural strength
• Fibrous capsules of organs and of joints; dermis of the skin; submucosa of digestive tract

Question 6

Define, give function, and location of Elastic connective tissue

Answer 6

A few ligaments, such as those connecting adjacent vertebrae, are very elastic. The dense regular connective tissue in those structures is called elastic connective tissue. Additionally, many of the larger arteries have stretchy sheets of elastic connective tissue in their walls.

Question 7

Define, give function, and location of Hyaline Cartilage

Answer 7

• Amorphous but firm matrix; collagen fibers form an imperceptible network; chondroblasts produce the matrix when when mature lie in lacunae
• Supports and reinforces; has resilient cushioning properties
• forms most of the embryonic skeleton

Question 8

Define, give function, and location of Elastic Cartilage

Answer 8

• Similar to hyaline but more elastic fibers in matrix
• maintains the shape of a structure while allowing great flexibility
• supports the external ear; epiglottis

Question 9

Define, give function, and location of Fibrocartlegde

Answer 9

• Matrix similar to but less firm that the in hyaline cartilage; thick collagen fibers predominate
• tensile strength with the ability to absorb compressive shock
• intervertabral discs; pubic symphysis; disks of knee joint

Question 10

What’s the difference between skeletal muscle and smooth muscle

Answer 10

Skeletal muscle is found connecting bones and controls Voluntary movement, Smooth muscle is found in hollow organs and controls involuntary movement (heart beat, lungs breathing, moving food through intestines.