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BMSC 207 Midterm Exam Study Guide | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass $13.48   Add to cart
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BMSC 207 Midterm Exam Study Guide | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass
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BMSC 207 Midterm Exam Study Guide | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass

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BMSC 207 Midterm Exam Study Guide | Questions & Answers (100 %Score) Latest
Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass


Physiology - ✔️✔️the study of the normal functioning of a living organism



Physiology is an ____________ science - ✔️✔️Integrative



Cells - ✔️✔️smallest unit of structure carrying out life processes



Tissue - ✔️✔️collection of cells carrying out related functions



Organ - ✔️✔️formation of tissues into a structural and functional group



Organ system - ✔️✔️integrated groups of organs



Teleological approach - ✔️✔️- the Function or "Why"

- why do RBC transport oxygen



Mechanismistic approach - ✔️✔️The "How"

- how do red blood cells transport oxygen

- the focus of physiology



Homestasis - ✔️✔️maintain a relatively stable internal environment

- coined in 1929 by Walter cannon



Extracellular fluid (ECF) - ✔️✔️fluid surrounding cells

- buffer between external environment and the cell

,Law of Mass balance - ✔️✔️If substance in the body is gained, it must be offset by an equal loss



Homeostasis does not mean - ✔️✔️Equilibrium



ECF components - ✔️✔️High Na+, High Cl-, very low K+

- blood plasma, interstitial fluid



ICF components - ✔️✔️very low Na+ and Cl- but high K+

- smooth muscle, fat cell, ovum



Local Control - ✔️✔️- input signal, integrating center, input signal and response are all in the same area



Reflex Control - ✔️✔️widespread changes in the body like BP

- separated into response loop and feedback loop



Reflex control steps - ✔️✔️Stimulus, Sensor, Input Signal, Integrating center, output signal, target,
response



Negative feedback loop - ✔️✔️- response opposes or removes the stimulus signal

- glucose in blood removed by insulin



Positive feedback loop - ✔️✔️- Not homeostatic

- reinforce a stimulus rather than removing it

- outside factor is required to shut off loop

- Baby pregnancy



Feedforward control - ✔️✔️- predicts a change thats about to occur

- increased heart rate before going to gym

, Functions of cell membrane - ✔️✔️- physical isolation - - regulation of exchange with the environment

- sensitivity to the environment

- structural support



Cell membrane composition - ✔️✔️55% proteins

45% lipids

- small amount carbohydrates

- not all membranes are created equally



Three types of lipids in the cell membrane - ✔️✔️- Phospholipids

- sphingolipids

- cholesterol



Phospholipids can arrange themselves as - ✔️✔️bilayer, Micelles (ball) or liposomes (ball with aqueous
centre)



Fluid mosaic model - ✔️✔️current cell membrane model, proteins dispersed, extracellular surface
contains glycol lipids and proteins



Integral proteins - ✔️✔️- transmembrane proteins, lipid anchor proteins (GPI anchor; sugar-phosphate
chain)



Integral protein functions - ✔️✔️membrane receptors, cell adhesion, transmembrane movement

- enzymes

- mediators of intracellular signalling



Peripheral proteins - ✔️✔️attach to integral proteins or loosely attached to phospholipid head

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