In the subdural space d in the central canal of the

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Unformatted text preview: .5/0.5 18. fibrocartilage Which of the following forms the structure of the intervertebral disks? A. fibrocartilage Student Response Value 100% B. elastic cartilage C. hyaline cartilage D. elastic connective tissue 0% 0% 0% Score: Feedback 0.5/0.5 19. multipolar neuron A multipolar neuron has: Student Response A. Many dendrites and axons attached to the cell body. B. Many dendrites and only one axon attached to the cell body. C. One dendrite and many axons attached to the cell body D. One process attached to the cell body. Score: 0.5/0.5 20. pheromomes Which of the following secretes pheromones? Value 0% 100% 0% 0% Feedback Student Response eccrine sweat glands apocrine sweat glands sebaceous glands Answers 1 and 3 E. both answers 2 and 3 A. B. C. D. Score: Value 0% 100% 0% 0% 0% Feedback Value 0% 0% 100% Feedback 0/0.5 1. reative refractory period The relative refractory period occurs during: Student Response A. opening of Na+ gates B. opening of K+ gates C. closing of K+ gates when excess K+ has left the neuron. + + D. opening of K gates when excess K has left the neuron. Score: 0% 0/0.5 2. Crossbridge attachment As soon as the active sites are exposed on actin: Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: 0/0.5 Value 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 100% Feedback 3. Epidermis Match descriptions with letters in the diagram of the epidermis. (Click on the word "diagram") The layer missing from thin skin. D The layer which constantly exfoliates. E Its cells contain numerous keratin filaments. B This layer undergoes constant mitosis. C Its cells contain dense keratin granules. A Statement The layer missing from thin skin. The layer which constantly exfoliates. Its cells contain numerous keratin filaments. This layer undergoes constant mitosis. Its cells contain dense keratin granules. Score: Response B A D C E Value 20.0% 20.0% 20.0% 0.0% 0.0% 0.3/0.5 4. osteoclasts Osteoclasts are derived at some point from: Student Response mesenchyme cells monocytes osteoprogenitor cells all of the above E. Answers 1 and 2 only. A. B. C. D. Score: Value 0% 0% 0% 0% 100% Feedback 0.5/0.5 5. thigh movement Movement in which the thigh is raised toward the abdomen is _____ of the hip. A. flexion Student Response Value 100% B. extension C. abduction 0% 0% Feedback Student Response D. adduction Score: Value Feedback 0% 0.5/0.5 6. myeloid tissue the myeloid tissue responsible for hematopoiesis is found in the: Student Response A. Sharpey's fibers B. red marrow Value 0% 100% C. yellow marrow D. p...
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.

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