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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. Ax$9.49
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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. Ax
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Course
BIOS 252 Anatomy
Institution
BIOS 252 Anatomy
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 potential...
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.
Sense: When a stimulus activates its specific sensory receptor.
Perceive: The process of your brain interpreting all the stimuli at a given time
,amurimi
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
Sense changes in water concentration - Osmoreceptors
Sense changes in temperature - Thermoreceptors
,amurimi
BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
Nocioceptors: Sense Pain
Chemoceptors: Sense changes in chemical composition
Mechanoreceptors: Sense stretching, pressure or vibrations
Thermoreceptors: Sense changes in temperature
Osmoreceptors: Sense changes in water concentration
Photoreceptors: Senses light
7. The process in which a sensory structure is stimulated and creates a graded
potential in a neuron is called:
a. Phasic
b. Transduction
c. Perception
d. Sense
Transduction : The process in which a sensory structure is stimulated and creates a graded
potential in a neuron.
Sense: Sense is what the brain receives from the sensory neuron.
Phasic: Phasic is a term used to describe a receptor that slowly adapts.
Perception: Perception is the interpretation and response of the senses
8. If a person were to feel pain in the indicated regions, which organ is most likely hurt
or damaged? Click on the options below for correct answer.
a. Lung and diaphragm
b. Liver
c. Heart
d. Stomach
, amurimi
BIOS 252 Anatomy And Physiology
II Week 1 To 8 Entire
Liver and gallbladder: The liver and gallbladder both cause referred pain in the right
upper quadrant of the abdominal cavity, at the inferior and superior aspects of the scapula,
the right shoulder and just along the posterior portions of the false and floating ribs.
Stomach has referred pain present anteriorly just inferior to the xyphoid process and
intermediate to the scapulae.
The lung and diaphragm will have referred pain covering the majority of the anterior
cervical region. It wraps around the neck but only goes up approximately halfway up and
stops just above the scapulas.
9. To is when a stimulus successfully stimulates an action potential in its
specific neuron. How your brain interprets the message is how the stimulus is
.
a. Transduce; Adapted
b. Adapt; transduced
c. Sense; perceived
d. Perceive; sensed
To adapt is when a neuron stops sending a message to the brain with regards to a
continuously sensed stimuli
To transduce is the ability of dendrites or its associated cells or structures to generate a
graded potential when stimulated.
10. Match the name of the receptors to their descriptions
Sense damage to tissues and cells - Nociceptors
Sense a mechanical change in its surrounding tissues. This includes touch, pressure, itch and
stretch - Mechanoreceptors
Senses a change in temperature - Thermoreceptors
Senses salt concentration of body fluids - Osmoreceptors
Senses chemicals and chemical concentrations - Chemoreceptors
Senses light - Photoreceptors
Nociceptors: Sense damage to tissues and cells
Thermoreceptors: Senses a change in temperature
Mechanoreceptors: Sense a mechanical change in its surrounding tissues. This includes
touch, pressure, itch and stretch
Osmoreceptors: Senses salt concentration of body fluids
Photoreceptors: Senses light
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