Biology Quiz Questions

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Exam 2 Quiz Questions 1. List 10 endocrine structures? * PT PAPAS SHOP TALK STAPH * a. Hypothalamus b. Stomach c. Thyroid gland d. Parathyroid gland e. Pancreas f. Posterior pituitary g. Anterior pituitary h. Pineal gland i. Adrenal gland j. Skin k. Small intestine l. Heart m. Ovaries n. Placenta o. Testes p. Adrenal medulla q. Liver r. Kidney s. Adipose tissue t. Thymus gland 2. 3. Briefly name and describe the classification of hormones. * Peptides or proteins i. Composed of linked amino acids * Steroids ii. Derived from cholesterol * Amino-acids iii. Modifications of single amino…show more content…
Draw and completely label a graph showing what would happen to the resting membrane potential if the sodium/potassium pumps where made non-functional and immediately after the nerve was stimulated to threshold. a. Resting membrane potential b. Depolarizing stimulus c. Membrane depolarizes to threshold. Voltage-gated Na+ enters cell. Voltage-gated K+ channels begin to open. d. Rapid Na+ entry depolarizes cell e. Na+ channels close and slower K+ channels open f. K+ moves from cell to extracellular fluid g. K+ channels remain open and additional K+ leaves the cell, hyperpolarizing it. h. Voltage-gated K+ channels close, less K+ leaks out of cell. i. Cell returns to resting ion permeability and resting membrane potential. 2. You are walking to class, pondering physiology, when you trip over an uneven place in the sidewalk, and fall. Unhurt but embarrassed and angry, you jump up and glance around to see if anyone is watching. From your knowledge of neuroanatomy and function, explain how the following areas of the brain might be involved in this scenario. j. cerebrum k.…show more content…
CL- 108mM eft & 10mM icf i. Ca2+ 1mM ecf & .0001 mM icf 15. How is the action of neurotransmitters terminated? w. Diffuse away from the synapse x. Inactivated by enzymes in the synapse cleft y. Transported back into the presynaptic cell or into adjacent neurons of glial cells 16. List four different types of glial cells, and briefly explain the role of each. z. Satellite cells - They supply nutrients to the surrounding neurons and also have some structural function. Satellite cells also act as protective, cushioning cells. {. Schwann cells – (PNS myelin) Myelinating Schwann cells wrap around axons of motor and sensory neurons to form the myelin sheath. the conduction of nervous impulses along axons, nerve development and regeneration, trophic support for neurons, production of the nerve extracellular matrix, modulation of neuromuscular synaptic activity, and presentation of antigens to T-lymphocytes. |. Oligodendrocytes - (CNS myelin) their main function is the insulation of axons in the CNS. * Satellite oligodendrocytes are functionally distinct from most oligodendrocytes. They are not attached to neurons and, therefore, do not serve an insulating role. They remain apposed to neurons and regulate the extracellular
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