Tissues and Systems of the Human Body

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• Tissues and Systems

1. Compare and contrast the 4 principal tissue types?
The four basic tissue types in the human body are: Epithelium, Connective, Muscle, and Nervous.
Epithelium is a single or multiple layers of flattened, cube-shaped or columnar cells which is a protective linings which covers interior or external surfaces of our organs while protecting, secretion, and absorption.
Connective server to connect and support tissues that bind and hold structures together by adhesion, while supporting, and insulating the attachment, and transportation.
Muscles are elongated cells that contract and shorten when stimulated which controls our movement.
Nervous are cells that transmit electrochemical impulses throughout the body creating rapid communication among those cells
Now that we know what they are we can see that one thing they all have common is there a type of tissues and cells, it also help the body work but by doing different functions and being in different locations. What I mean is all animals have tissues which have a common factor cells which are embedded in an extracellular matrix consisting of a ground substance and fibers. These extracellular matrix differ among the tissues in the epithelial and muscle tissues the cells are tightly packed and the matrix is small whereas the connective tissues the matrix takes up more space than the cells and the nervous has a water extracellular matrix. These tissues are known to be grouped in an embryonic origin. Epithelial is the only one that comes from three embryonic origin endoderm, ectoderm or mesoderm whereas the other three tissues only have one embryonic origin. Connective and muscle comes from mesoderm and the nervous comes from ectoderm.

2. List the levels o...

... middle of paper ...

... classifications of neurons we can understand how it functions. First starts at the sensory neuron that brings information from organs to the nervous system then inter-neurons connects the sensory neuron to the motor neurons or brain which send information back to the central nervous system to the muscles and glands on how to react.

3. Label a neuron diagram
Figure 24.5 pg 530

4. Is the following statement true or false? Explain. The sensory system only receives information from an organism’s external environment.
I believe this statement is false because our sensory system receives both external and internal information in an organism to maintain its life. It receives external from our eye, skin, smell, and ect. To monitor and detect changes but it receives internal from our muscles, organs, glands, and ect. which responds accurately to the external change.

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