BIOS 252 Anatomy And Physiology II Week 1 To 8 Entire
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Course
BIOS 252 Anatomy And Physiology
Institution
BIOS 252 Anatomy And Physiology
BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire1. The finger-like projections extending from the neuron’s cell body that are most
frequently the site of stimulation and formation of graded potentials are called
.
a. Synaptic Cleft
b. Dendrites
c. Axon
d. Axon Hillock
Graded potentia...
BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
The Senses
1. The finger-like projections extending from the neuron’s cell body that are most
frequently the site of stimulation and formation of graded potentials are called
.
a. Synaptic Cleft
b. Dendrites
c. Axon
d. Axon Hillock
Graded potentials are more often generated by the dendrites. If the graded potentials goes
above a certain threshold at the axon Hillock, an action potential is generated and carried
down the axon to the terminal ends. At this point for most neurons, vesicles containing
neural transmitters are released into the synaptic cleft where it acts upon the next neuron
or target tissue.
2. An axon with a diameter carries electrical impulses the
fastest.
a. Myelinated, Small
b. Unmyelinated, Large
c. Unmyelinated, Small
d. Myelinated, Large
Unmyelinated, Large : Large diameters allow for faster transmission, but myelinated axons
facilitate faster signal transmission when compared to unmyelinated neurons.
Unmyelinated, Small: Small diameter axons conduct electrical impulses slower than large
diameter axons. myelinated axons carry current faster than unmyelinated
Myelinated, Small: Small diameter axons conduct electrical impulses slower than large
diameter axons.
3. Fill in the blank.
1. Sense When a stimulus activates its specific sensory receptor.
2. Perceive The process of your brain interpreting all the stimuli at a given time
3. Receptors can either Adapt fast or slowly. If they do so quickly, they are called
Tonic receptors, if they do so slowly, they are called Phasic
receptors.
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Sense: When a stimulus activates its specific sensory receptor.
,BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
Perceive: The process of your brain interpreting all the stimuli at a given time
Agradestuvia
,BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
Receptors can either Adapt fast or slowly. If they do so quickly, they are called Tonic
receptors if they do so slowly, they are called Phasic receptors.
4. Place each description under the appropriate sense type.
General Senses ,
Include free nerve ending and encapsulated dendrites
Most require Special Cells
Special Senses
Found all over the body
All located in the head
Sometimes requires complex support structures
General Senses
Include free nerve ending and encapsulated dendrites
Found all over the body
Special Senses
Most require Special Cells
All located in the head
Sometimes requires complex support structures
5. Exteroceptors receptors sense information coming from the outside. Interoceptor sense
information originating from the inside while Proprioceptor receptors sense information
about body position.
Exteroceptor receptors sense information coming from the outside. Interoceptors sense
information originating from the inside while proprioceptor receptors sense information
about body position.
6. Match the names to the correct descriptions
Sense changes in chemical composition - Chemoceptors
Sense Pain - Nocioceptors
Sense stretching, pressure or vibrations - Mechanoreceptors
Senses light - Photoreceptors
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Sense changes in water concentration - Osmoreceptors
, BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
Sense changes in temperature - Thermoreceptors
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