Unit Three Lecture Study Guide

It is made up of either liquid, solid, or connective tissue, within the matrix there are many types of connecting fibres, such as collagen and elastic fibres.

• *Describe the 3 main types of cells and the 3 main types of fibers found in connective tissue? Reference Table 5.6.

1. Describe bone physiology and the bone remodeling cycle. Be sure to emphasize the two types of bone tissue and the roles of osteoblasts and osteoclasts.

6. Within days after a fracture, a “soft callus” of fibrocartilage forms. What fibers are found in this type of cartilage? Identify the cells required for fibrocartilaginous callus formation and list their functions.

Cartilage doesn’t contain any nerves or blood vessels and is surrounded by a layer of dense irregular connective tissue, the perichondrium (Marieb, 176). Bones contain various types of tissues which makes them organs. They are used for support, protection, movement, mineral storage, and blood cell formation (Marieb, 178-179).

12. What are the 3 types of cartilage and where would you find each type?

The skeletal system is made up of cartilage and bone. Both bone and cartilage are connective tissues, that is, they are composed of cells in a matrix with intracellular fibers. Just imagine connective tissue as a gelatin salad with grapes and coconut. The grapes would represent cells, the gelatin the support material for matrix, and the pieces of coconut the intracellular fibers. By changing the amounts of each ingredient and adding extra substances, we can produce a material that is very hard like bone and can withstand weight or softer like cartilage which can be used as a cushioning material. In this exercise, we will examine a fresh raw chicken bone to study bone

9. What are the three types of capillaries, and what functions do each serve? How is the blood brain barrier created? What are the forces that control movement of substances through the capillary wall (be specific)? How is lymph formed?

Connective tissue - Connective tissues holds and binds everything together which are found all around the body. This type of tissue is also called fibrous connective tissues as they are consisting of a lot of fibres eg. Collagen and Elastin.

The second type of tissue found in the body is connective tissue. They lie beneath the epithelial tissue helping to connect different part of the internal structure, the cells are more widely separated from each other then in epithelial tissue. The intercellular substance known as the matrix is found in considerably large amounts. Within the matrix there are usually fibres which may be a jelly like consistency or dense and rigid depending on the type, function and positioning of the tissue. Theses fibres form a supporting system for cells to attach to. The major functions of connective tissue are to transport materials, give structural support and protection. The types of connective tissue that will be explained are blood, bone, cartilage, bone, areolar tissue and adipose tissue.

There are two types of bone tissue: compact and spongy. The names imply that the two types differ from each other in many ways. There are three types of cells that contribute to bone homeostasis. Osteoblasts are bone-forming cell, osteoclasts resorb or break down bone, and osteocytes are mature bone cells. An equilibrium between osteoblasts and osteoclasts maintains bone tissue.

Characteristics: Closely attached to each other forming a protective barrier 2) Always has one free surface open to outside the body or inside an internal organ 3) Always had one fixed part to connective tissue underneath.

plates as matrix binder and soft collagen as reinforcing fibers. As bone supports all the organs of a body so its

The functional differences between these different types of vessels are reflected in their morphology as they need an adequate structure to perform their specialized function. All of these

Connective tissues are also known to be found throughout the entire body. Their function is to bind structures, provide support and protection, fill spaces, store fat, and produce blood cells. A distinguishing characteristic of connective cells is that they are farther apart than epithelial cells with extracellular matrix in between. Connective tissues have many different cell types. Fixed cells, such as fibroblasts and