Term
| What are the four functional regions on a neuron? |
|
Definition
Input
Integrative
Conductive
Output |
|
|
Term
| What are the three plexuses and what segments make up each? |
|
Definition
| Brachial (C5-T1), lumbar (L1-L4), sacral (L5-S4 |
|
|
Term
| What are the three connective tissue layers of a spinal nerve and what levels are each located? |
|
Definition
| Endoneurium (smallest layer), perineurium (middle layer), epineurium (outside layer) |
|
|
Term
| What is stimulus transduction? |
|
Definition
| Process by which stimulus energy is converted into an electrical signal |
|
|
Term
|
Definition
| Sensitive to stimulus arising from outside the body |
|
|
Term
| Interoreceptors (visceroreceptor) |
|
Definition
| Responsive to stimulus arising from the viscera |
|
|
Term
| Where do free nerve endings end? |
|
Definition
|
|
Term
| What kink of receptor is a Meissner's corpuscle, what are they sensitive to, and where do they live? |
|
Definition
| It is a mechanoreceptor sensitive to light touch and it hangs out in the superficial dermis. They are also rapid adapting. |
|
|
Term
| What are pacinian corpuscles sensitive to? |
|
Definition
|
|
Term
| Ruffini's corpuscles are sensitive to... |
|
Definition
|
|
Term
| Where are Merkel discs located and what are they sensitive to? |
|
Definition
| Epidermis and are sensitive to light touch |
|
|
Term
| What do intrafusal fibers do? |
|
Definition
| respond to degree and rate of stretch |
|
|
Term
| What is the difference in feedforward and feedback mechanisms in the peripheral nervous system. |
|
Definition
Feedback can only respond to the present stimulus. For instance, it is used to maintain position of limbs to hold an object.
Feedforward uses anticipatory control, and is used in rapid movment. The CNS uses feedforward in order to predict consequences. Feed-forward can modify spinal response. |
|
|
