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HBT1C4
Human Biology Test 1
| Question | Answer |
|---|---|
| Three types of membrane junction | Tight junction, adhesion, gap junction |
| Tight junction | Prevents fluids and most molecules from moving between cells. Useful in lungs. |
| Adhesion | Anchors cells together, but still allows for movement and flexibility |
| Gap Junctions | Transmembrane proteins form pores that allow small molecules to pass from cell to cell |
| 4 types of tissue types | Connective, Nervous, Muscle, Epithelial |
| Connective Tissues | Most abundant and widely distributed tissue type. |
| Four classes of connective tissue | Connective tissue proper, cartilage, bone tissue, blood. |
| Major Functions of Connective Tissues | Binding and support, Protetion, Insulation, Transportation |
| Connective Tissue Proper | Loose connective tissue and Dense connective tissue |
| Loose Connective Tissue | supports and protects organs |
| Dense Connective Tissue (Dense Regular) | Attaches muscles to bones or to muscles. Attatches bones to bones. (Tendons) |
| Dense Connective Tissue (Dense Irregular) | Able to withstand tension exerted in many directions, structural strength. (Dermis of the skin) |
| Dense Connective Tissue (Elastic) | Allows recoil of tissue following stretching (walls of large arteries) |
| Cartilage | Hyaline, Elastic, Fibro |
| Hyaline Cartilage | Supports and reinforces. Resists compressive stress. (Trachea and larynex) |
| Elastic Cartilage | Maintains the shape of a structure while allowing great flexibility. (External Ear) |
| Fibrocartilage | Tensile strength with the ability to absorb compressive shock. (discs of knee joints) |
| Connective Tissue: Bone | Spongy (Soft middle shaft and end of bone). Compact (Hard outer shell of bone) |
| Blood | Transport of respiratory gases, nutrients, wastes, and other substances. Contained withing blood vessels |
| Nervous Tissue | Transmit electrical signals from sensory receptors and to effectors which control their activity. (Brain, Spinal Cord, and Nerves) |
| Muscle Tissue | Skeletal muscle, cardiac muscle, smooth muscle |
| Skeletal Muscle | Voluntary muscle, locomotion, facial expression. (skeletal muscles attached to bones or occasionaly to skin) |
| Smooth Muscle | Involuntary control, propels substances or objects along internal passageways (walls of hollow organs) |
| Cardiac Muscle | Involuntary control, As is contracts it propels blood into circulation (walls of the heart) |
| Epithelial Membranes | Cutaneous Membrane, Mucous Membranes |
| Organs | Organs are made when multiple layers of various tissues come together, communicate with one another and live side by side |
Created by:
Kenzie_m28
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