Cells dividing into two new cells; the usual process of cell reproduction.

The protective tissue covering on body surfaces. Examples are skin, mucous membranes, the lining of the heart, digestive and respiratory organs.

This body system carries messages to and from the brain and controls and coordinates all bodily functions.

The number of bones in the skull, which includes the facial bones as well as the cranial bones.

The largest and strongest bone of the face.

A colorless, jellylike substance in which food elements such as proteins, fats, carbohydrates, mineral salts, and water are present.

This type of tissue supports, protects, and binds together other tissues of the body. Examples are bone, cartilage, ligaments, tendons, and fascia.

This system protects the body from diseases by developing immunities and destroying disease-causing toxins and bacteria.

The number of bones in the cranium.

This bone is also known as the cheekbone.

The dense, active protoplasm found in the center of the cell. It plays an important part in cell reproduction and metabolism.

This type of tissue contracts and moves the various parts of the body.

This body system purifies the body by elimination of waste matter; consists of kidneys, liver, skin, intestines, and lungs.

The hindmost bone of the skull that forms the back of the skull a above the nape.

These bones form the roof of the mouth.

All the protoplasm of the cell except that found in the nucleus.

This type of tissue carries messages to and from the brain and controls and coordinates all bodily functions.

This body system serves as a protective covering for the body and helps with temperature regulation; consists of the skin, accessory organs such as oil and sweat glands, sensory receptors, hair and nails.

This one is the light, spongy bone between the eye sockets that forms part of the nasal cavity.

These two bones form the upper jaw.

Part of the cell that encloses the protoplasm and permits soluble substances to enter and leave.

This type of tissue gives smoothness and contour to the body.

This body system affects growth, development, sexual activities, and health of the body; consists of specialized glands.

This bone joins all of the bones of the cranium together.

These two bones are thin layers of spongy bone found on either of the outer walls of the nasal depression.