6A Edrolo Chapter Flashcards

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1
Q

What is homeostasis?

A

A process that maintains the internal environment of an organism so that systems can function appropriately

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2
Q

5 things that effect function of cells

A
  • Temperature
  • pH acidity level
  • Blood sugar levels
  • Sodium and Potassium concentration
  • Fluid balance
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3
Q

What is the stimulus-response model?

A

Outlines how the changes in external and internal environments can influence an organisms functions

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4
Q

The 5 components of the stimulus-response model

A
  1. Stimulus
  2. Receptor
  3. Modulator
  4. Effecter
  5. Response
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5
Q

Describe the Stimulus component of the stimulus-response model

A

The change in the internal and/or external environment of the organism

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6
Q

Describe the Receptor component of the stimulus-response model

A

The receptor detects the stimulus and transfers its knowledge to the Modulator

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7
Q

Describe the Modulator component of the stimulus-response model

A

Information detected via the receptors are sent to the Modulator. The Modulator compares this information to the ideal state for the organism and then releases molecules to alter the functioning of an effector

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8
Q

Describe the Effecter component of the stimulus-response model

A

A molecule, cell, or hormone that responds to the signal of the Modulator and produces a response

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9
Q

Describe the Response component of the stimulus-response model

A

The Effecter initiates the response. The response can be any change to react to the stimulus.

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10
Q

Thermoreceptors

A

Detect changes in temperature

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11
Q

Nociceptors

A

Detect painful stimuli

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12
Q

Baroreceptors

A

Detect changes in pressure

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13
Q

Chemoreceptors

A

Detect changes in chemical concentration

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14
Q

Photoreceptors

A

Detect changes in light

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15
Q

When does the positive feedback system occur?

A

When the response increases the initial stimulus

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16
Q

When does the negative feedback system occur?

A

When the response counters the stimulus

17
Q

Three steps of cellular signaling

A
  1. Reception
  2. Transduction
  3. Response
18
Q

Describe the reception part of cellular signalling

A

The detection of the stimulus and then converting this into an electrical, chemical, or mechanical signal

19
Q

Describe the Transduction part of cellular signalling

A

The transmission of signal during cellular signaling. Can involve sending a signal between organisms, across the body, to a neighboring cell, or back to the original receptor cell

20
Q

Describe the Response part of cellular signalling

A

The change in the function of the target cell, organ, or organism