Cells
This part of the cell is known as the “control center” because it contains the DNA.
The nucleus
This bone of the upper leg is the largest and strongest bone in the body.
The femur
This type of tissue covers body surfaces and lines organs and blood vessels.
Epithelial tissue
This is the body system that includes the skin, hair, and nails.
The integumentary system
This term means maintaining a stable internal environment inside the body.
Homeostasis
These small structures are the “powerhouses” of the cell because they make most of the cell’s ATP energy.
The mitochondria
An adult human body has about this many bones.
206 bones
This tissue type supports, binds, and connects other tissues and includes bone and blood.
Connective tissue
This outermost layer of the skin is made mostly of dead, keratinized cells.
The epidermis
This directional term means closer to the body’s midline, the opposite of lateral.
Medial
This jelly‑like material fills the cell and holds the organelles in place.
The cytoplasm
These are the bones that protect the brain.
The skull bones (cranial bones)
This tissue type is specialized for contraction and movement.
Muscle tissue
This brown pigment made by melanocytes helps protect the skin from UV radiation.
Melanin
This anatomical term refers to the study of body structure.
Anatomy
This process is the division of a cell’s nucleus to make two identical nuclei.
Mitosis
This strong but flexible tissue cushions the ends of bones in joints.
Cartilage
This tissue type is specialized for sending electrical signals through the body.
Nervous tissue
What are the functions of skin?
It regulates body temperature, houses sensory receptors, synthesizes chemicals, and excretes waste
This term describes the position of a body part that is closer to the point of attachment of a limb to the trunk.
Proximal
This step of mitosis has the Chromosomes line up in the middle of the cell.
Metaphase
This type of bone cell breaks down old bone so new bone can be built.
An osteoclast
A group of similar cells working together to perform a specific function is called this.
Tissue
The process by which skin cells move from the basal layer to the surface, gradually filling with the protein keratin, flattening, dying, and forming the tough, protective stratum corneum barrier.
Keratinization
This term refers to the membrane on the surface of the lungs.
Visceral Pleura