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StudyStack Set 1
Weeks 1-5
| Term | Definition |
|---|---|
| Anatomical position | the standard reference position for the body; standing with arms hanging at sides with palms forward, gives meaning to directional terms |
| Directional terms | Superior - toward the head Inferior - toward the feet Anterior - front Posterior - back Medial - toward the midline Lateral - toward the side of the body, or away from its midline Proximal - toward or nearest the trunk of the body, or nearest the p |
| pH | units by which acid and base concentrations (relative H ion concentrations) are measured; scale ranges from 0 (extremely acidic; high H concentration) to 14 (extremely basic, or alkaline; low H concentration) |
| Acid | substance that ionizes in water to release hydrogen ions; substance with a pH of less than 7 |
| Base | a chemical that, when dissolved in water, reduces the relative concentration of H+ ions in the whole solution (sometimes by adding OH- ions). |
| Mitochondria | the “powerhouse” of cells that provide energy needed by the cell to carry on day to day functioning, growth, and repair |
| Plasma membrane | membrane that separates the contents of a cell from the tissue fluid, encloses the cytoplasm, and forms the outer boundary of the cell |
| Nucleus | double-membraned, central structure that contains most of the genetic material of the cell |
| Epithelial tissue | tissue type that covers the body and its parts; lines various parts of the body; forms continuous sheets that contain no blood vessels; classified according to shape and arrangement |
| Connective tissue | most abundant and widely distributed tissue in the body |
| Nervous tissue | tissue type consisting of neurons and glia that pro-vides rapid communication and control of body function |
| Muscle tissue | tissue type that produces movement |
| Epidermis | outermost layer of the skin; sometimes called the “false” skin |
| Dermis | the deeper of the two major layers of the skin, composed of dense fibrous connective tissue interspersed with glands, nerve endings, and blood vessels |
| Hypodermis | loose layer fascia under the skin, rich in fat and areolar tissue located beneath the dermis; also called subcutaneous layer or superficial fascia |
| Axial skeleton | the bones of the head, neck, and tors |
| Appendicular skeleton | bones of the upper and lower extremities of the body |
Created by:
Joceliee19
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