Four Main Tissue Categories

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

Tissues are groups of cells, which are placed together to achieve a common function. There are four main types of tissue: Epithelial, connective, muscle and nervous. Most of these tissues are found in our bodies, however the epithelial tissue is covered all over the surfaces of the body.

3. Describe the primary functions of each type of body tissue and give examples of each.

Smooth muscle is one of three muscle fiber types found in animals. Unlike skeletal and cardiac muscle cells, smooth muscle cells are not striated, and have single nuclei. Smooth muscles are typically under control of the autonomic nervous system, and do not contract voluntarily. Smooth muscle contracts slowly,

All cells group together within the body to form tissue, a collection of similar cells group together to perform a specialized function. There are four primary tissue types in the human

There are three main types of muscle tissue in the body: Skeletal muscle, smooth muscle and cardiac muscle. Firstly, skeletal muscle has a stripped appearance when it is examined under a microscope so it is sometimes known as striated/stripped muscle. Skeletal muscle is voluntary and this means that it is under conscious control. Secondly, there is smooth muscle which is an involuntary muscle that operates without any conscious control. This muscle is controlled by the nervous system. Smooth muscle can be found in the blood vessels and the walls of the digestive system and it helps to control digestion and blood pressure. Lastly, there is cardiac muscle which is located in in the wall of the heart. Cardiac muscle is involuntary and this means that it is not under conscious control. This is made up of a specialised type of tissue which is striated and it has its own blood supply. The contractions aid the pumping of blood through the blood vessels

Tissues: Tissues are groups of similar cells that have specific functions. In this piece of work I’ll talk about these types of cells:

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.

In this assignment I’m going to talk about the structure of the main tissues which are found within the body as well as what their role is in the terms of two named organs of the body. Tissues are a collection of similar cells that group together to carry out a specific function within the body. There are four different types of tissue found in the human body which include; epithelial tissue; connective tissue; muscle tissue and nerve tissue.

2) Comparing and contrasting loose Connective tissue (figure c) and simple cuboidal epithelial tissue (figure b)

types of muscle tissues : skeletal, cardiac, smooth. Each of these different tissues has the ability

The 4th tissue is the nerve tissue which it is composed of neurons and neuroglia. The function of the neurons are to receive and conduct electrical signals and the neuroglia is to have support functions providing insulation to the axons. Furthermore the neuroglia and the neurons are both included in the central nervous system and peripheral system. What makes this tissue special is that neurons and neuroglia helps to revive signals with also proving the insulations.

Skeletal Muscle Structure.The cells of skeletal muscles are long fiber-like structures. They contain many nuclei and are subdivided into smaller structures called myofibrils. Myofibrils are composed of 2 kinds of myofilaments. The thin filaments are made of 2 strands of the protein actin and one strand of a regulatory protein coiled together. The thick filaments are staggered arrays of myosin molecules.

4. Organ level- Organs are made up of different types of tissues. Organ is a discrete structure composed of at least two tissue types that performs a specific function for the body.

There are the Smooth, the Skeletal, and the Cardiac muscular tissues. Smooth muscles are made of spindle-shaped cells.