Various Types of Tissues in Humans
This follows the description of various types of tissue in humans
1. Types of Networks
a. Epithelial tissue or tissue cover.
b. Muscle tissue.
c. Binding net
d. Support network (support network)
e. Neural network.
A. Epithelial tissue (tissue cover)
Epithelial tissue is tissue that covers the surface of the body and organs. Based on the shape of the cells that make it up, epithelial tissue can be divided into five parts, namely:
1. Single layer flat epithelium (layer)
Its properties:
• Consists of a layer of cells
• The constituent cells are flat
Can be found at:
• Body cavity membrane or peritonium
• Capillary vascular epithelium called endothelium
2. Multi-layered epithelium or multilevel epithelium,
its properties:
• Composed by many cells
• Variation in shape is very real
Can be found at:
• Outer layer of the skin
• Oral and nasal cavity
3. Cube epithelium
Its properties :
• Composed by cube-shaped cells with a core in the center
Can be found at:
• Salivary glands
• Urinary tract
• The thyroid gland
4. Cylindrical epithelium
Its properties:
Arranged by cells in which cells are joined to one another by the long side.
Can be found at:
• Stomach
• Small intestine
5. Ciliated cube epithelium
Its properties:
• Composed by cube-shaped cells
• The ends are protrusions of plasma proto called cilia
Can be found at:
• Sperm duct
• Respiratory tract
• Lung bubbles
B. Muscle tissue
Muscles that act as a means of motion are composed of 3 types, namely:
1. Smooth muscle tissue
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The properties of its constituent cells:
• Elongated and pointed cell shape with a central core
• There are fibers called myofibrils that are homogeneous
• Muscle covering layer is called sacrolemma and the fluid is called sacroplasm
The properties of smooth muscle work:
• Slow to occur reactions to stimuli provided
• When working long periods of fatigue
• Works without being affected by nerves
Can be found at:
• Intestinal wall
• Vascular ducts
• Muscular eye circumference
2. Striated muscle tissue
The properties of its constituent cells:
• Cylindrical shape
• Has many non-homogeneous myofibril nuclei
Properties of striated muscles:
• Quick to react to stimuli
• Cannot stand long hours of work
• Work is controlled by the central nervous system
• There are skeletal muscles, so the bones can move
3. Heart muscle tissue
The shape of the heart muscle is similar to the striated muscle, but its core is in the middle.
The heart muscle is also called myocardium.
The nature of the work of the heart muscle "
• Easily reacts to stimuli
• Resistant to fatigue
• Found in the heart muscle
C. Connective tissue
Connective tissue is composed of:
• Liquid (matrix) consists of protein and salt
• Connective tissue cells, fibroplasts that are able to move the seamoebid to produce fibrocyte fibers
• Fibers consist of yellow elastic fibers and hyalin fibers
Types of connective tissue, namely:
a. Embryonal connective tissue: cells that have not been differentiated and are located around blood vessels
b. Loose connective tissue: tissue that binds the skin to muscles
c. Fat tissue: a group of fat cells that are dense and their intercellular space is occupied by fibroplast cells; serves as a soft and elastic cushion.
d. Pigment tissue: the cells contain pigment granules
e. Solid connective tissue: tissue that binds firmly to one organ with another, consisting of:
• Tendons, function to bind muscles with bones.
• Ligaments, function of connecting bones with bones
D. Support tissue (support tissue)
Functioning to support the body in carrying out various functions, including:
1. Cartilage tissue: elastic cartilage, hyalin cartilage, and collagen cartilage
2. Bones, functioning:
• Give shape to the body
• Where muscles attach
• Protect soft body parts
The outermost bone layer is called the periosteum which is functioning to repair cracked bones.
3. Blood
Blood consists of 3 structures:
• Blood beads (blood pieces) consisting of erythrocytes (spherical shape, containing hemoglobin and antigens that play a role in determining blood type) and leukocytes (spherical shape larger than erythrocytes but in smaller amounts and able to propagate foreign bodies so that they play a role in body defense)
• Blood plasma
Contains food ingredients and protein that are useful in the process of blood clotting and antibody formation.
• pieces of blood
E. neural tissue
parts of nerve cells
a. dendrites: hairs coming out of cell bodies with relatively short size, functioning to receive stimulation
b. axon (neurit): hair that comes out of a cell body with a relatively long size and is usually only one, has a sheath or membrane, including:
• myelin sheath: is the innermost sheath and consists of phospholipids
• Schwan cells: attach to the myelin sheath
• neurilemma: membranes covering the outermost axons
• axoplasm: plasma contained in axons
c. the cell body contains a large nucleus and granules that originate from the clumping endoplasmic reticulum
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