11.1 cells, Tissue, Organs and Systems Merit In this power point presentation I will be comparing and contrasting of the four tissue types; epithelium, muscle, connective tissue, and nervous tissue. By Esmail Ali

Connective Tissues Epithelium Muscle Nervous tissue Esmail Ali

Four tissue types Summary: Tissues are a group of cells similar in structure and function in an organism like a plant or cell that together perform a type of functions.  These are: Connective Tissues Epithelium Muscle Nervous tissue Connective tissues, connects and holds in place body organs and other tissues. Epithelium covers the body surface and lines the channels of the body, such as respiratory, alimentary, and urinary tract, that have openings to the outside. Muscle is the tough elastic tissue that makes the body parts move. Muscles tissues have the capability of contracting to produce force that causes motion. Nervous tissues conduct nerve impulses throughout the body that enables the body to coordinate its functions It forms the central nervous system and the peripheral nervous system. All of these animal tissue cells contain C molecules Esmail Ali

Epithelium– Connective Tissue Connective tissue forms a structure which epithelial tissue rests and within which nerve tissue and muscle tissue are embedded. Blood vessels and nerves travel through connective tissue. Connective tissue functions not only as a mechanical support for other tissues but also as an opportunity for communication and transport among other tissues. The connective-tissue jelly supports the epithelium and permits free diffusion of nutrients and metabolites. These two functions of mechanical and nutritional support are basic to all connective tissues. Esmail Ali

Comparison between epithelial and connective tissue Epithelial tissues are tightly packed sheets of cells. They to protect the body (ie. you skin), absorb nutrients. For example in the blood vessels and intestines and fluids such as oil, they are not used to connect any part of the body to anything else. They also cover objects in the body such as the heart, lungs, and blood vessels. Connective tissues are used to connect tissues and organs to each other. Adipose, a connective tissue, connects the epidermis (which is the skin) to original tissues. They are not tightly packed. There are six different connective tissues: Blood, Bone, Adipose (Fat), Cartilage, Nerve, and loose connective tissue. Each having their own characteristics. Esmail Ali

All living cells have the ability to react to stimuli All living cells have the ability to react to stimuli. Nervous tissue is specialised to react to stimuli and to conduct impulses to various organs in the body which bring about a response to the stimulus. Nerve tissue are all made up of specialised nerve cells called neurons. Neurons are easily stimulated and transmit impulses very rapidly Esmail Ali

References http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookanimalts.html http://facultyfiles.deanza.edu/gems/heyerbruce/D.Body08.pdf http://www.biog1105-1106.org/demos/105/unit2/animalslides.html Book references: Tittle: Applied sciences student book, section: Physiology of the human body systems, date: 8/12/11, page: 193, Author: Lee Hudson Esmail Ali