How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Anatomy Chapters 1-6
the study of body structure.
the study of how the body functions
are usually simple molecules that often consist of only one or two different elements.
always contain carbon & hydrogen & usually are associated with living things.
process by which organisms maintain a relatively stable internal environment
positively charged particles in the nucleus of an atom.
the particles of the nucleus that have no charge
negatively charged particles found outside the nucleus
Within a cell
located or occurring outside a cell or cells
proteins that speed up chemical reactions in the body
internal transport system of the cell, modifies proteins, and synthesizes lipids
site of protein synthesis
site of destruction of old or damaged proteins
Synthesis of carbohydrates. Packaging of materials for secretion from the cell.
Powerhouse of the cell, organelle that is the site of ATP (energy) production
Contains digestive enzymes
Organize the spindle fibers during cell division.
Sweep materials across the cell surface.
Enables a cell to move
Increase a cell's surface area for absorption
Protein microfilaments that give shape to a cell, support the membrane and microvilli, and provide for attachment and movement.
Double strand of nucleotides in the form of a double helix.
Outer boundary of a cell and is made of phospholipids, cholesterol, and proteins.
Within the cytoplasm and is bounded by a double layered nuclear membrane with many pores.
A watery solution of minerals, gases, organic molecules, and cell organelles that is found between the cell membrane and the nucleus.
One cell with the diploid number of chromosomes divides into two identical cells, each with the diploid number of chromosomes.
Cell division that produces reproductive cells in sexually reproducing organisms
A solution with the same salt concentration as in cells. (0.9%)
A solution with a lower salt concentration than in cells. (0%)
A solution with a higher salt concentration than in cells. (3%)
Movement of molecules from an area of greater concentration to an area of lesser concentration.
The diffusion of water through a selectively permeable membrane.
Requires the energy of ATP to move molecules from an area of lesser concentration to an area of greater concentration.
Involve a cell engulfing something. Ex: a white blood cell engulfing bacteria.
Where neurons meet, the small place bewteen them.
The outer layer of the skin
The inner layer of the skin
Gland that releases its secretions through tubelike structures called ducts
glands of the endocrine system that release hormones into the bloodstream
The outermost epidermal layer, consists of many layers of dead cells; all that is left if their keratin.
Red Bone Marrow
Found in spongy bone. Produces red blood cells, platelets, and white blood cells.
Yellow Bone Marrow
Found in compact bone in the diaphysis. Mostly adipose tissue.
movement in one plane
movement in one plane with some lateral movement
Side to side movement
Movement in several planes