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Physiology - Heckert > Test 1 Review > Flashcards

Test 1 Review Flashcards

1
Q
  1. Which of the transport mechanisms require energy other than kinetic energy?
A

active transport

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2
Q
  1. Which ion is most concentrated in the extracellular environment?
A

sodium

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3
Q
  1. Which organelle is directly associated with the synthesis of proteins for secretion?
A
  1. Rough ER
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4
Q
  1. Pits coated with what are often associated with endocytosis?
A
  1. Clathrin
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5
Q
  1. Sodium potassium pump is an example of which of the following kinds of transport?
A
  1. primary active transport
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6
Q
  1. Sodium glucose pump is an example of which of the following kinds of transport?
A
  1. secondary active transport
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7
Q
  1. Which of the following would have to be a transmembrane protein?
    a. A receptor protein
    b. A protein binding to the cytoskeleton
    c. A channel protein
    d. A phosphorylase
A
  1. channel protein
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8
Q
  1. Sodium calcium pump is an example of which of the following kinds of transport?
A
  1. secondary active transport
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9
Q
  1. Glucose transporters (GLUT transporters) employ which of the following kinds of

transport?

A
  1. facilitated diffusion
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10
Q
  1. Which cation is most abundant in extracellular fluid?
A
  1. Sodium
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11
Q
  1. Which organelle/s is/are associated with intracellular trafficking?
A
  1. the ER and Golgi Apparatus
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12
Q
  1. Which organelle/s is/are associated with the most ATP production?
A
  1. mitochondria
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13
Q
  1. Which anion is most abundant in extracellular fluid?
A
  1. Chloride
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14
Q
  1. Which cation is most abundant in intracellular fluid?
A
  1. Potassium
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15
Q
  1. Which type of neurons would transmit an action potential the fastest?
A
  1. Large diameter, myelinated
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16
Q
  1. saltatory conduction is characteristic of which part of a typical diameter?
A
  1. axon
17
Q
  1. A selectivity filter with carbonyl oxygens is associated with which of the following kinds of ion channels?
A
  1. potassium
18
Q
  1. The resting potential for a typical neuron, such as a motor neuron, is best represented by which of the following potentials?
A
  1. ‐90mV
19
Q
  1. Which of the following terms refers to a chain of sarcomeres?
A
  1. Myofibril
20
Q
  1. Which of the following sarcomere bands does not undergo a length change during the contraction of a skeletal muscle?
A
  1. A band
21
Q
  1. Dihydropyridine (DHP) channels are part of which of the following structures?
A
  1. T‐Tubules
22
Q
  1. Ryanodine‐sensitive calcium ion release channels are part of which of the following structures?
A
  1. Sarcoplasmic reticulum
23
Q
  1. Which of the following events occurs first during the transmission of a signal from an alpha motor neuron to a skeletal muscle fiber?
A
  1. Calcium Ion Influx into axon terminal
24
Q
  1. What represents a factor by which the concentration of calcium ion increases in the cytosol after release from the sarcoplasmic reticulum?
A
  1. 100
25
Q
  1. Which of the following maintains an optimum calcium concentration gradient to

facilitate return of calcium to SR?

A
  1. Calsequestrin
26
Q
  1. Fast twitch fibers have what characteristics?
A
  1. They are more fatigable than slow twitch fibers
27
Q
  1. Which of the following represents an example of an eccentric contraction?
A
  1. The triceps muscle while lowering the body to the floor during a push up
28
Q
  1. Which of the following are anchored to the presynaptic membrane and associated with synaptic vesicles to which they are tethered by short filaments?
A
  1. Dense bars
29
Q
  1. In order for an acetylcholine‐gated ion channel to open, how many Ach molecules are necessary to attach to its (channel) alpha subunits?
A
  1. Two
30
Q
  1. Which of the following represents the first thing that happens after Ach binds to the

ligand‐gated channels on the sarcolemma?

A
  1. An end plate potential is created on the muscle fiber
31
Q
  1. The vesicles for acetylcholine are transported to the axon terminal from where?
A
  1. Golgi
32
Q
  1. Which of the following can be used to inactivate acetylcholinesterase?
A
  1. Neostigmine

Physiology - Heckert (3 decks)

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