Lecture 2: Peripheral Nervous System Flashcards
What are the 2 divisions of the autonomic nervous system?
- Sympathetic Division
- Parasympathetic Division
Sensory receptors are specialized to respond to changes in the environment (stimuli). Activation of sensory receptors results in ______ ______ that triggers nerve impulses.
graded potentials
Sensation is _________ of stimulus
awareness
Interpretation of the meaning of the stimulus occurs in the _______ and is known as _______
Interpretation of the meaning of the stimulus occurs in the brain and is known as perception.
What are the 3 ways to classify receptors:
- Type of stimulus
- Body location
- Structural Complexity
Name the 5 classifications of stimulus type:
- Mechanoreceptors
- Thermoreceptors
- Photoreceptors
- Chemoreceptors
- Nociceptors
Mechanoreceptors _____
a. Respond to touch, pressure, vibration
and stretch
b. sensitive to changes in temperature
c. respond to light energy
d. respond to chemicals
e. sensitive to pain-causing stimuli
respond to touch, pressure, vibration and stretch
Photoreceptors ______
a. Respond to touch, pressure, vibration
and stretch
b. sensitive to changes in temperature
c. respond to light energy
d. respond to chemicals
e. sensitive to pain-causing stimuli
c. respond to light energy
Nocioceptors _________
a. Respond to touch, pressure, vibration
and stretch
b. sensitive to changes in temperature
c. respond to light energy
d. respond to chemicals
e. sensitive to pain-causing stimuli
e. sensitive to pain-causing stimuli
Themroreceptors
a. Respond to touch, pressure, vibration
and stretch
b. sensitive to changes in temperature
c. respond to light energy
d. respond to chemicals
e. sensitive to pain-causing stimuli
b. sensitive to changes in temperature
Receptors are also classified by there locations. Name the 3 receptors classified by their location.
- Exteroreceptors
- Interoreceptors
- Proprioceptors
The _______ recptors will detect stimuli outside of your body, like on your skin
exteroreceptors
The receptors that detect stretch in your skeletal muscles are
proprioceptors
Receptors are also classified by the structure. These are known as ____ and ____
encapsulated and non encapsulted nerve endings
Thermoreceptors are triggered by changes in temperature and activated between ____ and _____C.
23C and 48C
When temperatures fall outside the range of 23C and 48C what receptors are triggered?
Nociceptors
When the nociceptors are triggered the stimulus is interpreted as _____
pain
Cold thermoreceptors are located on the _____-____
superficial dermis
The Non-encapsulated Nerve fibers are all based in complex/simple organs
complex
The non-encapsulated nerve endings are abundant in the _______ and _______ tissue
epithelial and connective tissue
Where capsulated nerve fibres are mostly myelinated, non-capsulated nerve fibers are ______ ______ _______
both myelinated and unmyelinated
Hair follicle receptors are exteroceptors and stimulated by _______. These receptors are ____ adapting
mechanoreceptors and are rapidly adapting
A nerve is a _____- like organ. It consists of _______ and _______ peripheral axons.
Cord-like that consists of myelinated and unmyelinated fibers
