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Place the following labels in the proper position to designate what effect each condition would have on membrane physiology.
Categories:
1) Makes RMP (Resting Membrane Potential) Less Negative
2) Influences the Ability of the Cell to Repolarize
3) Influences the Ability of the Cell to Depolarize
Place in the three categories above:
a) Voltage regulated potassium channels are blocked
b) Decreased concentration of leaky potassium channels in the membrane
c) Acetylcholine esterase concentration is decreased
d) ATP stores are declining through mitochondrial poison (arsenic)
e) The size of the synaptic cleft is increased
f) Hyperhydration (high water concentration in ECF)
g) Release of excitatory neurotransmitter by a presynaptic input is blocked
h) Hyponatremia (low ECF sodium)
i) Neurotransmitter synthesis is compromised due to Golgi dysfunction in the presynaptic neuron
j) Increased concentration of leaky sodium channels in the membrane

Sagot :

Lanuel

Answer:

1. B, D and J.

2. A and C.

3. E, F, G, H, AND I.

Explanation:

A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

A membrane is a thin layer which forms the wall of the cell and typically controls what leaves and enters the cell.

Some of the effects of various biological conditions on membrane physiology are;

1. Makes RMP (Resting Membrane Potential) Less Negative: this simply means that it decreases RMP;

  • Decreased concentration of leaky potassium channels in the membrane.
  • ATP stores are declining through mitochondrial poison (arsenic).
  • Increased concentration of leaky sodium channels in the membrane.

2. Influences the Ability of the Cell to Repolarize;

  • Voltage regulated potassium channels are blocked.
  • Acetylcholine esterase concentration is decreased.

3. Influences the Ability of the Cell to Depolarize;

  • The size of the synaptic cleft is increased.
  • Hyperhydration (high water concentration in ECF).
  • Release of excitatory neurotransmitter by a presynaptic input is blocked.
  • Hyponatremia (low ECF sodium).
  • Neurotransmitter synthesis is compromised due to Golgi dysfunction in the presynaptic neuron.
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