WorksheetsCh 14 part 2 Spinal Nerves
Total questions: 42
Worksheet time: 21mins
Nerves are part of what system
CNS
PNS
What are functions of nerves
Bring sensory impulses to the spinal cord
take motor impulses to the muscles/glands
Integrate information
Make a decision
How many pairs of spinal nerves are there?
12
31
24
60
Through where do spinal nerves exit the vertebral column
Vertebral foramen
Invertebral foramina
Vertebral canal
Transverse proccess
The spinal cord can be divided into...
Cervical part: 8 cervical nerves
Thoracic part: 12 thoracic nerves
Lumbar part: 5 lumbar nerves
Coccygeal part: 1 coccygeal nerve
Sacral part: 5 sacral nerves
How many nerves does the cervical part have
8
12
5
1
What spinal nerves makes up the cauda equina- so they extend from the conus medullaris and pass through the vertebral canal of lumbar and sacrum
S1-S5
Co1
L2-L5
C1-C8
T1-T12
Spinal nerves are...
Mixed nerves (both sensory and motor)
Sensory nerves
Motor nerves
Neither
Spinal nerves go to skin, muscles, some internal organs
True
False
These are areas of the skin that are connected to specific spinal nerve
Dermatomes
Myotomes
These are specific muscle that are supplied by a specific spinal nerve
Dermatomes
Myotomes
Dermatomes are....
areas of the skin that are connected to a specific spinal nerve
specific muscles that are supplied by a specific spinal nerve
Myotomes are....
areas of the skin that are connected to a specific spinal nerve
specific muscles that are supplied by a specific spinal nerve
After exiting vertebral column, EACH spinal nerve splits into 4 major branches
True
False
What spinal branch connects with skin and muscles on the back of the trunk
Dorsal/posterior ramus
Ventral/anterior ramus
Meningeal ramus
Rami communicantes
What spinal branch connects with skin and muscles of the extremities, lateral and anterior surfaces of the trunk, head and shoulders.
Dorsal/posterior ramus
Ventral/anterior ramus
Meningeal ramus
Rami communicantes
What spinal branch connects with the vertebra and the meninges.
Dorsal/posterior ramus
Ventral/anterior ramus
Meningeal ramus
Rami communicantes
What spinal branch go to some of the internal organs to control their activities… part of the autonomic nerves.
Dorsal/posterior ramus
Ventral/anterior ramus
Meningeal ramus
Rami communicantes
This branch...Dorsal/posterior ramus...
connects with skin and muscles on the back of the trunk.
connects with skin and muscles of the extremities, lateral and anterior surfaces of the trunk, head and shoulders.
connects with the vertebra and the meninges.
go to some of the internal organs à control their activities… part of the autonomic nerves.
This branch...Ventral/anterior ramus...
connects with skin and muscles on the back of the trunk.
connects with skin and muscles of the extremities, lateral and anterior surfaces of the trunk, head and shoulders.
connects with the vertebra and the meninges.
go to some of the internal organs à control their activities… part of the autonomic nerves.
This branch...Meningeal ramus...
connects with skin and muscles on the back of the trunk.
connects with skin and muscles of the extremities, lateral and anterior surfaces of the trunk, head and shoulders.
connects with the vertebra and the meninges.
go to some of the internal organs à control their activities… part of the autonomic nerves.
This branch... rami communicantes...
connects with skin and muscles on the back of the trunk.
connects with skin and muscles of the extremities, lateral and anterior surfaces of the trunk, head and shoulders.
connects with the vertebra and the meninges.
go to some of the internal organs à control their activities… part of the autonomic nerves.
Spinal nerves give off a branch called ventral/anterior ramus --> goes to the muscles and skin on the anterior surface of the trunk, arms, legs, head and shoulders.
True
False
Ventral/anterior rami branches of thoracic nerves (T1-T12) --> go directly to the intercostal nerves.
True
False
Ventral/anterior rami branches of other spinal nerves (C1-C8, L1-L5, S1-S5) reorganize and form network on both sides of the spinal cord before going to the muscles and skin of their respective areas is called...
Plexus
Reflex arc
Receptor
Effector
which region does not have a plexus
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
The shoulder region is what plexus
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus Supplies to the skin and muscles of the head, neck and upper part of the shoulders.
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Formed by the ventral rami branches of the spinal nerves C1 – C5.
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus supplies to the skin and muscles of the shoulders and upper extremities (arms).
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Formed by the ventral rami branches of the spinal nerves C5 – C8 and part of T1
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Supplies to the skin and muscles of the lateral and anterior abdominal wall, external genitals and part the thighs.
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Formed by the ventral rami branches of the spinal nerves part of T12, L1 – L4.
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Supplies to the skin and muscles of the buttocks and lower extremities (legs).
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
This plexus is Formed by the ventral rami branches of the spinal nerves L4 – L5 and S1 – S4.
Cervical plexus
Branchial plexus
Thoracic plexus
Lumbar plexus
Sacral plexus
a fast response to an external or internal stimulus to maintain homeostasis.
Reflex
Reflex Arch
with age, does conduction rate increase or decrease
Increase
Decrease
refers to the pathway followed in order to cause a reflex.
Reflex
Reflex Arch
Reflex arc: refers to the pathway followed in order to cause a reflex. It involves:
Receptor- receives the stimulus that causes generation of an impulse. Could be dendrite of the sensory neuron or a specialized cell.
Sensory neuron- carries impulse to CNS (spinal cord/brain).
Integration center- CNS where information is analyzed. Association neuron/interneurons are involved.
Motor neuron- takes impulses from CNS to where the response occurs.
Effector- the structure that responds….muscle or a gland.
receives the stimulus that causes generation of an impulse. Could be dendrite of the sensory neuron or a specialized cell.
Receptor
Sensory neuron
Integration center
Motor neuron
Effector
in the reflex arc....__________ carries impulse to CNS (spinal cord/brain).
Receptor
Sensory neuron
Integration center
Motor neuron
Effector
in the reflex arc....__________ takes impulses from CNS to where the response occurs.
Receptor
Sensory neuron
Integration center
Motor neuron
Effector
