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Human Physiology 2 Body System - Week 1 - Lecture 3 -Kidneys Flashcards | StudBud
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Human Physiology 2 Body System - Week 1 - Lecture 3 -Kidneys
Human Physiology 2 Body System - Week 1 - Lecture 3 -Kidneys
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Answers
1
In GFR, vasoconstriction of the afferent arteriole will reduce blood flow ….....? the kidney
Outside
Inside
Out
Into
2
Reabsorption can be either 1…… (between cells) or 2…….. (across cells)
1. Transcellular 2. paracellular
1. Intercellular 2. extracellular
1. Paracellular 2. transcellular
1. Intracellular 2. extracellular
3
Which of following is correct regarding
passive
transport in tubular reabsorption?
Uses electrochemical and osmotic gradient to move substances
Uses energy to transport substances against osmotic gradient
The energy comes directly from ATP
Uses the potential energy from the concentration gradient
4
Approximately ….....? of filtered fluid is reabsorbed in proximal tubule
20%
10%
90%
99%
5
Tubuloglomerular Feedback involves?
Depolarization of smooth muscle cells
Regulation of the amount of Na+ and water in the tubule
Regulates amount of constriction to the afferent arteriole
Hyperpolarization of smooth muscle
6
In primary active transport, the energy comes directly from where?
ADP
ATP
AMP
ACP
7
Which of the following is not one of the import reasons for autoregulation of GFR?
Autoregulation of GFR avoid imbalances in fluid/electrolytes
Mean blood osmotic pressure helps keep GFR fluids in balance
Mean arterial pressure is a critical determinant of GFR
Autoregulation of GFR prevent damage to filtration barriers
8
Outside of local mechanisms for regulating GFR, renal arterioles are innervated by ...? neurons
Parasympathetic
Sympathetic
Kidney
Endocrine
9
Secondary active transport uses the 1….. energy from the 2….. gradient of another molecule
Potential and membrane
Kinetic and membrane
Potential and concentration
Kinetic and concentration
10
Which of following is correct regarding
active
transport in tubular reabsorption?
Uses the potential energy from the concentration gradient
Uses energy to transport substances against osmotic gradient
Uses electrochemical and osmotic gradient to move substances
The energy comes directly from ATP
11
Approximately ….....? of the renal plasma flow is filtered into Bowman’s capsule
10%
90%
99%
20%
12
Which of the following are the main factors in regulation GFR?
Both 1 and 2
2. Renal blood flow
1. Net filtration pressure
None of the answers
13
GFR regulation, the afferent and efferent arterioles are both vessels that can be ….? regulated
Selective
Independently
Dependently
Exclusive
14
The majority of renal blood flow regulation occurs at the ……? arteriole
Distal
Efferent
Glomerulus
Afferent
15
Which of the following is NOT a feature of autoregulatory myogenic response?
Activates smooth muscle > stretch-sensitive ion channels
Depolarisation of the vascular smooth muscle cells
Myogenic response increase MAP, increase afferent arteriole
Activates paracrine mediators, change amount of Na+ & water
