viernes, 27 de marzo de 2015
martes, 24 de marzo de 2015
Muscular System
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Muscular System
The Muscular System is made up of muscles that work together to carry out many jobs. A muscle is a body part that's made up of bundles of long fibers. Many muscles work with bones to help you move.
Parts of the Muscular System
There are tree types of muscles:
Cardiac Muscle makes up the walls of your heart. Cardiac muscle contracts and relaxes to help pump blood from your heart to the rest of your body.
Skeletal Muscle help you move. The work by pulling on bones.They work in pairs to move bones back and forth.
Smooth Muscle is found in the walls of your body's organs.
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Skeletal System
The bones of the human body work together to do some very
important jobs.
Parts of the Skeletal System
The Skeletal System has five functions:
1. Supports your body.
2. Gives it shape.
3. Helps you move.
4. Some bones make blood cells.
5. Protect the organs inside your body.
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Nervous System
The Nervous System is very important. None other body systems could work without its help.
Your brain is the control center of your nervous system.
There are billions of nerve cells in your brain.
Parts of the Muscular System
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Respiratory System
The respiratory system is made up of the organs in your body that help you to breathe.
Parts of the Respiratory System
What structures are parts of the respiratory system? Tha nasal passages, trachea, branches, bronchiole, and air sacs (alveoli).
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martes, 17 de marzo de 2015
lunes, 16 de marzo de 2015
Human Body- Tissues
The cells are the body's bulding blocks. These blocks form a model of a human, much like cells form tissues, and tissues form organs.
A tissue is a group o many cells of the same type that work together to perform a certain job. There are four types of tissues: skin tissue, muscle tissue, connective tissue, and nerve tissue.
The connective tissue gives your body support. It includes the bones in your skeleton, the ligaments, and the blood.
A tissue is a group o many cells of the same type that work together to perform a certain job. There are four types of tissues: skin tissue, muscle tissue, connective tissue, and nerve tissue.
Connective tissue
The connective tissue gives your body support. It includes the bones in your skeleton, the ligaments, and the blood.
Skin Tissue
Your skin is your body's largest organ. It is also made of muscle, nerve, and connective tissue. The skin is waterproof thanks to your middle layer (Dermis) that has oil glands.
Nerve Tissue
Neurons are nerve cells.
Muscle Tissue
There are three types of muscle tissue: Cardiac, Smooth, and Skeletal.
Cardiac Tissue
Smooth Tissue
Skeletal Tissue
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