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Physiology Exam 1 Study Chapter 6 Communication & homeostasis PowerPoint Presentation
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Physiology Exam 1 Study Chapter 6 Communication & homeostasis - PowerPoint PPT Presentation


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Physiology Exam 1 Study Chapter 6 Communication & homeostasis. What are the two basic physiological signals ?. Chemical Electrical. What are the basic methods of cell-cell communication ?. Direct cytoplasmic transfer- Gap junctions Contact-dependent signals Local communication

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slide1
Physiology

Exam 1 Study

Chapter 6 Communication & homeostasis

slide3
Chemical
  • Electrical
slide5
Direct cytoplasmic transfer- Gap junctions
  • Contact-dependent signals
  • Local communication
  • Long distance communication
slide6
Which method of cell-to-cell communication occurs by chemicals that diffuse through the extracellular fluid?
slide8
This method of cell-to-cell communication involves the transfer of chemical and electrical signals between adjacent cells.
slide11
Heart
  • Smooth muscle of the GI tract
slide22
What method of cell-to-cell communication utilize Cell Adhesion Molecules (CAMs) to transfer signals?
slide25
Paracrine signaling
  • Autocrine signaling
slide28
If a chemical acts on cells in the immediate vicinity of the cell that secreted it, its is called ____ signal.
slide37
Because both of these signals reach their targets by diffusing through the interstitial fluid. Diffusion is limited by distance.
slide38
Most long-distance communication between cells is the responsibility of what two organ systems?
slide39
Nervous system
  • Endocrine system
slide40
An electrical signal travels along a ___ until it reaches the very end of the cell, where it is translated into a ____ .
slide41
Neuron,

Neurocrine

slide44
If a neurocrine acts more slowly as an autocrine or paracrine signal, it is called a ______.
slide51
False

(Cytokines are produced on demand.)

slide55
Cytosol
  • Cell membrane
  • Nucleus
slide61
Ligand-gated ion channels
  • Intergrin linked to cytoskeleton
  • G protein-coupled receptor with seven membrane
  • Receptor Enzyme
slide64
Which type of regulation results in the reduction in the number of receptors and/or binding affinity for the ligand?
slide75
Inside the cell or
  • On the cell membrane
slide77
Lipophillic
  • Lipophobic
slide79
Nucleus
  • Cytosol
  • On the cell membrane
slide80
If you find target cell receptors on the cell membrane, they are likely to be what type protiens?
slide87
The process by which an extracellular signal molecule activates a membrane receptor that in turn alters intracellular molecules to create a response.
slide94
Place the following words in correct order of signal transduction:

* RESPONSE

* RECEPTOR

* AMPLIFIER

* TRANSDUCER

* EXTERNAL SIGNAL

slide99
Activate protein kinase
  • Activate amplifier enzymes
slide103
Alter gating channels
  • Increase intracellular calcium
  • Change enzyme activity
slide105
Adenylylcyclase
  • Guanylylcyclase
  • Phospolipase C
slide111
Membrane
  • Cytosol
slide115
Nucleotides
  • Ions
  • Lipid-derived
slide117
Which second messenger is causes exocytosis, muscle contraction, cytoskeleton movement, channel opening?
slide122
cAMP
  • cGMP
slide124
cAMP activates protein kinaseA
  • cGMP activates protein kinaseG
  • DAG activates protienkinase C (there is a C in DAG, Diacylglycerol)
slide128
Both

cAMP & cGMP

(nucleotides)

slide130
Signal molecule binds to receptor that
  • Activates a protein that
  • Creates second messengers that
  • Creates a response
slide132
Receptor region; extracellular side of cell membrane
  • Enzyme region; on the cytoplasmic side
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Specificity
  • Speed
  • Duration of action
  • Coding for stimulus intensity
  • Nature of signal
slide144
Chemical signals are secreted in the blood for distribution throughout the body by this type of reflex?
slide150
This type of reflex coding for stimulus intensity is correlated with the amount released?
slide160
Brain

or

spinal cord

slide164
Muscles

&

glands, some adipose tissue

slide172
Neural Reflex

&

Neuroendocrine Reflex

slide173
Match the following:

*Food in stomach *Target Cell

*Insulin *Stimulus

*Spinal Cord & Brain *Classic hormone

*Adipose cell *integrating center

slide174
*Food in stomach = *Stimulus

*Insulin = *Classic hormone

*Spinal Cord & Brain = *Integrating center

*Adipose cell = *Target Cell