Comprehensive exam BIOS 252 questions and answers

Comprehensive exam BIOS 252 bv bv bv




1. proximal: part of the body that is closer to the center of the body than another part.
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ex:the knee is proximal to the toes
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2. Chemical reaction that uses water and involves breaking molecules down
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into smaller pieces: hydrolysis
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3. organelles of the cell:nucleus bv bv bv v
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ribosomes
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endoplasmicreticulum b
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Golgi apparatus
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vesicles
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vacuoles
lysosomes
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mitochondria
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chloroplasts
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centrioles
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4. What does the plasma membrane do?: Controls what enters and leaves the cell
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5. Homeostatic regulatory mechanisms: Negative feedback is used the most
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6. What kind of tissue is blood?: Connective
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7. Saggital: divides body into left and right
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8. transverse plane: Divides body into upper and lower partsbv bv bv bv bv bv bv bv




9. frontal plane: Divides the body into front and back portions.
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, Comprehensive exam BIOS 252 bv bv bv




10. what muscle provides a major force: prime mover (agonist)
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11. isotoniccontractions: musclelengthchangesandmovestheload,thetension
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remains relatively constant through the rest of the contractile period.
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come in two flavors concentric and eccentric
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12. attachment to the stationary bone: organ bv bv bv bv bv




13. Striations can be seen on what types of muscle?: cardiac and skeletal bv bv bv bv bv bv bv bv bv bv bv




14. What is the membrane of skeletal muscles: sarcolemma - contains sar-
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coplasm, the cytoplasm of muscle cells
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15. Molecule that blocks myosin and actin: Tropomyosin bv bv bv bv bv bv




16. What is released at the neuromuscular junction that results in muscular
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contraction: acetylcholine
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17. What are some factors that increase conduction of action potential: Axon
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diameter, internode distance, and myelin sheath thickness
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18. Functional contractile unit of a muscle fiber: sarcomere bv bv bv bv bv bv bv




19. IPSP: inhibitory post-synaptic potential;small, transitory change in the negative
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direction; i.e., hyperpolarization
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20. What are the muscles that move the eye (know the location, and what
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direction): superior rectus: attaches to top of eye, moves eye upward
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inferior rectus:attaches to bottom of eye, moves eye downward
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medial rectus:attaches to side of eye near nose, moves eye inward towards nose
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lateral rectus:attaches to side of eye near temple, moves eye outward
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21. major agonist of flexion of the arm: biceps brachii
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22. What is myelin sheath and what type of cells is it made up of: an insulating
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layer, or sheath that forms around nerves, including those in the brain and spinal
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cord. It is made up of protein and fatty substances.
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Schwann Cells - Peripheral Nervous System bv bv bv bv bv




Oligodendroglial cells - Central Nervous System
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