Network Functions in Animals and the Function


Network In Animals – no body heighter animals (Vertebrates) there are various kinds of networks that can be grouped into merismatik tissue,epithelium tissue, connective tissue, muscle tissue, and nerve tissue.

A. Meristematik Tissue
Meristematik Network is the network that the cells always divide. This network is present in the embryo phase. In humans and vertebrate animals, there meristematik network only on certain parts. For example, at the end of the pipe bone that is still young and in bone marrow that form blood cells.

B. Epithelial Tissue or Skin Tissue
Epithelial tissue is the tissue covering the other networks. These include simple epithelial tissues and epithelial layers. Simple epithelial tissues consist of only one cell layer. Examples are epithelial tissue inner pipe. Layered epithelial tissue composed of several layers of cells. Examples intestinal and respiratory epithelium. There is a ciliated epithelial tissue, for example in the respiratory tract. Cilia are useful to receive stimuli from the outside, for example if there is dust we will sneeze. Epithelium which is outside the body are usually called the epidermis (epi = edge, and derm = skin), for example on the skin. Instead, the epithelium that covers the inside of the organ called the endodermis.


C. Tie Tissue
Connective tissue is the tissue that connects one network with another network. The function of connective tissue such as the following:

• attach a network to other networks.
• Wrapping organ
• Fill the cavity in between internal organs.
• Transporting oxygen and food substances other kejaringan.
• Transporting the remains of kealat metabolic expenditure.
• produce immunity.

Connective tissue can be grouped into ordinary connective tissue, specialized connective tissue, connective tissue backers, and connective tissue.

1. Ordinary Tie
Ordinary connective tissue differentiated into dense connective tissue and loose connective tissue. Dense connective tissue such as muscle tissue in the tendon. Muscle tendon is the end of the muscle file attached to bone. Loose connective tissue is a tissue filler space between the organs.

2. Specialized Connective Tissue
Special connective tissue has a specific function, such as saving energy in the form of fat, resist shock, and form the blood. Examples of specialized connective tissue is fatty tissue under the skin.

3. Belt Advocate Tissue
Connective tissue consists of a network advocates cartilage and true bone tissue. True bone tissue also functions
to produce red blood cells (erythrocytes).

4. Cconnective Tissue
Consists of connective tissue connecting the blood and lymph. The network consists of blood and blood plasma blood granules. Granules of blood consists of red blood cells (erythrocytes), white blood cells (leukocytes), and keeping the blood (platelets). Transport function of blood tissue oxygen, carbon dioxide, nutrients, residual substances, and hormones. The network consists of nodes that circulate lymph fluid in the lymphatic vessels. Lymph fluid serves to transport fats.

d. Muscles Tissue
Muscle tissue consists of skeletal muscle, smooth muscle and cardiac muscle. Muscle tissue serves as an activator. Skeletal muscle tissue composed of muscle cells when observed with a microscope has a light and dark lines criss-cross. Therefore, skeletal muscle cells is also known as striated muscle cells or muscle cells transversely striped. Order to have a lot of muscle cell nuclei. Striated muscle cells to work because of the influence of our will. Smooth muscle cells contained within the organ pad,
for example in the intestines and blood vessels. Contractile smooth muscle fibers do not have a line of dark and light. Spindle-shaped smooth muscle cells and a single core. Work smooth muscle was not influenced our will. Composed of cardiac muscle cells that have dark and bright lines such as striated muscle, but work outside our will.

e. Nerve Tissue
Neural network consists of nerve cells (neurons) and nerve fibers. Neural network serves as Conductor stimuli, namely bringing excitatory stimuli from the receiver (receptor) to the brain and then forwarded to the muscle. Nerve tissue of animals and humans have only