Human physiology exam 1 verified answers and questions 2023.

Human physiology exam 1 verified answers and questions 2023. what word means to maintain a constant internal environment? - correct stasis how do most body systems operate- by positive or negative feedback? - correct ive feedback what are the 4 types of tissues? - correct us, epithelial, connective, and muscle ______ controls are inherent to an organ, whereas ______ controls are regulatory mechanisms initiated outside an organ that can alter the activity of the organ - correct nsic, extrinsic what are the three types of cell junctions and give an example of each? - correct somes- cardiac, rivets. tight junctions- small intestines. gap junctions- all cells in solid tissues what is the only fluid compartment that can be acted upon directly to change the other two compartments? - correct a what type of molecule can pass through the lipid bilayer portion of the cell membrane without being impeded? - correct hilic proteins are able to have high specificity. what gives them this characteristic? - correct shape what gives protein their shape? what determines that? - correct acid sequence tell me about three of the plasma membrane proteins - correct els, carriers, and membrane bound enzymes what structure is screwed up in cystic fibrosis? how does this relate to paeudomonas aeruginosa? - correct answers.CFTR... what type of molecules influence embryonic tissue segregation? - correct name three things that increase the diffusion of a substance across a membrane - correct ntration gradient, surface area, and low molecular weight what are two things that slow down diffusion of a substance across a membrane? - correct ase thickness and size what happens to cells that are placed in hypertonic solution? - correct ted what are the three functions of the sodium/ potassium pump? - correct answers.pH, cell volume, sodium outside the cell and potassium inside the cell is H+ moved out of the blood and into the urine by symport or antiport? - correct ort what is one example of vesicular transport? - correct mom to baby do ESPS depolarize, repolarize, or hyperpolarize a cell membrane? - correct answers.ESPS- depolarize IPSP- hyperpolarize what happens on the ion level when the cell membrane reaches threshold? - correct m gates flood open and move inside what happens on the ion level when the cell membrane reaches +30? - correct m gate closes and potassium gates open rushing outside what keeps an action potential moving only one way? - correct ctory period when a signal is being coded for intensity, there are two different ways for a neuron to "understand" that the signal is stronger. what are they? - correct tion and temporal is a myelinated neuron faster or slower than an unmeylinated one? - correct r what two types of cells make myelin? - correct nn and oligodendrocytes what are the four types of gated channels? - correct cal, voltage, thermal, and mechanical what type of potential is decremental? give an example? - correct d, like your voice in the distance what are three mechanisms that drugs can use to modify neurotransmitters? - correct nt reuptake, compete for neurotransmitter, desensitize for pleasure what are the three indirect ways that cells communicate with each other? - correct transmitters, hormones, and neurohormones what type of hormones go through the plasma membrane and change the gene activity? - correct id based/lipophilic when a hormone uses second messenger signaling, what protein does it attach to to whisper to the effector protein inside the cell? - correct answers.g protein what type of hormones have been carried on plasma proteins to be transported through the blood? - correct hilic hormones what are the three meninges, outermost to innermost? - correct mater, arachoid, and pia mater what cells form the blood brain barrier? what is good and bad about it? - correct rocytes, it keeps things in and out what are two things that the brain must have, even if you deprive other tissues of them? - correct n and glucose what structure connects the left and right hemispheres of the brain? - correct s callosum if a stroke victim cannot answer questions, does that mean they cannot understand speech anymore? - correct they just cant speak what are three things your frontal lobe does? - correct h, personality, and understanding what lobe does auditory and auditory association? what does association mean when applied to your cerebral lobes? - correct ral- understanding it