A & P

The study of cellular structure and function.

Sex cells and somatic cells.

• Sperm for males
• Oocytes for females.

All other cells in the human body.

The outer boundary of the cell (also called the cell membrane).

• Physical Isolation- acts as a physical barrier
• Regulation of exchange with the environment-
• -ions and nutrients enter
• -wastes eliminated and cellular products released
• Sensitivity to the environment- first part of the cell affected by changes in the composition, concentration or pH of the extracellular fluid
• Structural support- anchors cells and tissues

• Hydrophilic heads- toward watery environment
• Hydrophobic fatty-acid tails- inside membrane
• -Acts as a barrier to ions and water--soluble compounds

A watery medium that surrounds a cell.  The plasma membrane separates cytoplasm from this fluid.

Fluid material that is located inside the cell and surrounding the nucleus.  Cytoplasm contains many more proteins than extracellular fluid.