Aauzsa Mack 10/25/2014 AP2530 M1 Chapter 4 Checkpoint Questions 1. Tissue is a group of similar cells and their intercellular substance joined together to perform a specific function. 2. The four basic types of body tissues are epithelial, connective, muscle, and nervous. 3.
Several molecules make matter - organelles. Organelles metabolized and work together to make cells. Cells make tissues and a minimum of 2 tissues, usually four types make an organ. The organs work together in certain organ systems. Multiple organ systems make the organism.
These cells, too small to be seen with the unaided eye, are organized into tissues. A tissue is a series of cells that accomplish a shared function. Tissues, in turn, form organs, such as the stomach and kidney. A number of organs working together compose an organ system. An organism is a complex series of various organ systems.
Priscilla Sims 1. Compare and contrast the functions of each tissue type. Why do some areas of our body have stratified squamous epithelium and other areas have simple squamous epithelium? There are four basic tissue types in the human body: epithelial, connective, muscle and neural. The epithelial tissue covers the body surfaces and lines the cavities and tubular structures and serves essentials functions.
P2 There are two different types of epithelial tissue these are simple and compound. Simple Epithelium- this type of epithelium tissue is from an animal consisting of one of more layers of closely packed cells. The cells can vary in structure depending on their function which may be protective, secretory or absorptive. This epithelium tissue covers external and internal surfaces of the body. Compound Epithelium – this type of epithelial tissue is made to withstand wear and tear.
Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective absorption, protection, cellular transport and detection of sensation. Epithelial layers are avascular, meaning they contain no blood vessels and rely on underlying vascular tissues to absorb nutrients from. Epithelia can also be organized into clusters of cells that function as exocrine and endocrine glands. Exocrine and endocrine epithelial cells are highly vascular.
Epithelial Tissue: Epithelial tissue covers the whole surface of the body. It is made up of cells closely packed and ranged in one or more layers. This tissue is specialised to form the covering or lining of all internal and external body surfaces. Epithelial tissue that occurs on surfaces on the interior of the body is known as endothelium. Epithelial cells are packed tightly together, with almost no intercellular spaces and only a small amount of intercellular substance.
Module 2 Tissues to Tattoos 1. Compare and contrast the functions of each tissue type. Why do some areas of our body have stratified squamous epithelium and other areas have simple squamous epithelium? All 4 types of tissue originate from 3 primary layers in the developing human embryo. There are a number of cell junctions used by the various tissue types for contact with surrounding cells and the basement membrane, communication and for structural integrity.
LAB THREE: Body Tissues and the Integumentary System Describe the characteristics of epithelial tissue. (5 points) Epithelial tissue is a sheet of cells which covers a body surface or even lines a body cavity. Covering and lining epithelium forms the outer layer of the skin, dips into and lines the open cavities of the cardiovascular, digestive and respiratory systems, and also covers the walls and organs of the closed ventral body cavity. Glandular epithelium fashions the glands of the body. Special characteristics of the epithelial tissue layer are that these types of tissues are composed almost entirely of close packed cells.
Four genes contain the code which defines the alpha protein, or alpha chain, whereas two other genes define the code for the beta chain. In the fetus, two other genes define the makeup of the gamma chain. Despite the different amount of genes, the alpha and beta chains are made in equal quantities. These protein chains join together developing red blood cells, and will stay together for the life of the red blood cell. Hemoglobin will be the same in all people.