Brain: The brain has billions of nerve cells that are controlled by the brain. The brain controls the nervous system.
Central Nervous System: It includes the brain, spinal cord, peripheral nervous system, and peripheral nerve. It controls most functions of the body and mind. It controls our thoughts and the way we move.
Types of muscles: Skeletal muscle, cardiac muscles, and smooth muscles.
Skeletal muscles are attached to bone. They pull on tendons and make the body part move.
Cardiac Muscle: heart muscles that causes the beating of the heart.
Smooth Muscle: They help food pass through the digestive system. It helps hollow organs contract.
The Anatomy of a Bone- Bones are the framework of our bodies. Babies have over 300 bones. Adults only have 206 bones! The reason is because babies' bones are made out of cartilage and some bones join together when we grow.
Bone Parts: Outside part of the bone is called the periosteum. It's thin, but have the nerves and the blood vessels which nourish the bone. Compact bone is smooth and very hard. Cancellous bone looks like a sponge, but it stronger. In the very inside of the bone is bone marrow and that looks like jelly and makes new blood cells for the body.
The Skeletal System: is a network of what tendons, ligaments and cartilage that connect the bones to other bones. It's function is to protect the organs, move the body, produce blood cells, stores calcium, creates support for the body. Teeth are also part of the skeletal system.