Ch 32, 33, 34, 35, & 36 Flashcards
The nervous system has 2 major functions, what are they?
Communication and control
Most nerve centers are in the — and —
Brain and spinal cord
What does the central nervous system consist of?
-brain
-spinal cord
What does the peripheral nervous system consist of?
-cranial nerves
-spinal nerves
The ——— influences the activity of skeletal muscles and movement throughout the body
Voluntary nervous system
The ———, is automatic and influences the activities of involuntary muscles and glands, also includes the sympathetic nervous system and the parasympathetic nervous system
Autonomic nervous system
The —— gives the body its framework, supports and protects vital organs, and permits motion
Skeletal system
The bony framework of the body is held together by —
Ligaments
What are the two parts of the skull?
-the cranium
-the face
The ——, or vertebral column, is the principal support system of the body
Spinal column
The spinal column is composed of 33 irregularly shaped bones called —
Vertebrae
The — of the vertebra is the bulky portion that faces anteriorly in the spinal column
Body
The — is the posterior aspect of the vertebra
Spinous process
Between each two vertebrae is a fluid filled pad of tough elastic cartilage called a — that acts as a shock absorber
Disk
What are the first 7 of the vertebrae called?
Cervical
What were the next 12 vertebrae under the cervical region called?
Thoracic
What are the next 5 vertebrae under the thoracic region called?
Lumbar
What are the next 5 vertebrae under the lumbar region called?
Sacral
What are the 4 fused vertebrae under the sacral spine called?
Coccyx (tailbone)
Injury to the —— is the most common cause of spinal cord injury
Cervical spine
The —— is composed of nervous tissue, it exits the brain through an opening at the base under the skull. Is surrounded by a sheath of protective membranes called — and a cushioning layer of cerebrospinal fluid
-spinal cord
-meninges
The —— carry impulses down the spinal cord and out to muscles, these are tested by having a patient move
Motor tracts
The —— carry impulses from pain receptors up the spinal cord and to the brain. These are tested by applying pain to the patient
Pain tracts
To test the right pain tract in the spinal cord, you must apply pain to what side of the body?
Left
To test the left pain tract, you must apply pain to the — side of the body
Right
The ——— carry gentle touch impulses from sensory receptors up the spinal cord to the brain, these are tested by applying gentle touch to the patient
Light touch tracts
The light touch sensation is carried up the —— of the spinal cord as the side where the touch is applied
Same side
A patient can have a spinal cord injury without any spinal column damage, this is known as a spinal cord injury without radiologic abnormality or —
SCIWORA
This kind of spinal injury occurs when the weight of the body is driven against the head, caused by falls or MVA’s:
Compression injury
This kind of spinal injury occurs when there is severe forward movement of the head meets the chin, or when the torso is excessively curved forward:
Flexion injury
This kind of spinal injury occurs when there is severe backward movement of the head in which the neck is stretched, or when the torso is severely arched backwards:
Extension injury
This kind of spinal injury occurs when there is lateral movement of the head or spine beyond its normal rotation:
Rotation injury
This kind of spinal injury occurs when the body or neck is bent severely from the side:
Lateral bending injury
This kind of spinal injury occurs when the vertebrae or spinal cord are stretched and pulled apart, common in hangings:
Distraction injury
This kind of spinal injury occurs when there is injury from gunshots, stabbings, and other impaled traumas that involve the cranium or spinal column:
Penetration injury
A ——— is an injury to one or more vertebrae, that is, the portion of the spine composed of bones and ligaments
Spinal column injury
A ——— involves damage to the nervous tissue that is enclosed inside the hollow center of the bony spinal column: the spinal cord
Spinal cord injury
A ———— results when an area of the spinal cord has been completely transected either physically or physiologically
Complete spinal cord injury
—— is a temporary concussion like insult to the spinal cord that causes effects below the level of injury, can cause flaccid muscles, anesthetic effect, and paralysis
Spinal shock
In spinal shock, a male patient may have an involuntary erection of the penis called?
Priapism
—— from spinal shock, also called spinal vascular shock, results from an injury to the spinal cord that interrupts nerve impulses to the arteries
Neurogenic hypotension
An ———— occurs when the spinal cord is injured but not completely through all the three major tracts
Incomplete spinal cord injury
In ———, the medial, or middle portion of the spinal cord is injured, causing a dysfunction in the inner tracts that control upper extremity motor and sensory function, commonly seen in elderly
Central cord syndrome
——— results from injury of the sensory and motor tracts located in the anterior portion of the cord
Anterior cord syndrome
In anterior cord syndrome, the patient loses the ability to ——
Feel pain
An injury to a hemisection (the right or left half) of the spinal cord disrupts the spinal tracts on only one side of the cord. The patient experiences motor and sensory losses below the injury site, but the distinctive feature of ——— is that the effects differ on two sides of the body
Brown sequard syndrome
In ———, the patient loses motor function and light touch sensation on one side of the body while retaining pain sensation on that same side
Brown sequard syndrome
A complete spinal cord injury can result in:
-total paralysis
-loss of sensation below the level of injury
An injury to the third to fifth cervical vertebrae might injure the phrenic nerve that controls the function of the —
Diaphragm