Shared Flashcard Set

Details

Spinal Cord Pathways
Spinal Cord Pathways
27
Anatomy
Undergraduate 2
11/08/2010

Additional Anatomy Flashcards

 


 

Cards

Term
foramen magnum to L1/L2
Definition

the spinal cord extends from the _____ to _____

Term

increased numbers of motor neurons in the gray matter of the cervical and lumbar regions.

These neurons are needed to innervate the upper and lower limbs.

Definition
Changes in the cross-sectional shape of the spinal cord are mainly due to what? 
Term
caudal
Definition

THE SPINAL CORD DEVELOPS FROM

THE _______ PORTION OF THE

NEURAL TUBE

Term
Myeloceles
Definition
In one type of spina bifida, _________ form as a result of failure of the neural groove to close. 
Term
vertebrae
Definition

More common forms of spina bifida result from failure of the _______ to enclose the spinal cord. 

Term

MENINGOMYELOCELE A.K.A. SPINA BIFIDA CYSTICA

Definition

– MOST COMMON FORM OF SPINA BIFIDA

Term
Neurons and Glia
Definition

NEUROEPITHELIUM GIVES RISE TO ALL

 SPINAL CORD ________ & ______

Term

1.NEUROEPITHELIAL LAYER
2.MANTLE LAYER
3.MARGINAL LAYER

Definition

NEUROEPITHELIAL CELLS DIVIDE AND DIFFERENTIATE into what 3 layers?

Term

sensory

motor

Definition
In the spinal cord white matter, the ascending tracts are _________ and the descending tracts are _______
Term
SOMATOSENSORY CORTEX
Definition

GENERAL SENSORY PATHWAYS TERMINATE IN THE ____________.

Term

SPINOTHALAMIC SYSTEM

Definition

SMALL DIAMETER FIBERS THAT TRANSMIT SENSORY INFORMATION SLOWLY AND

WITHOUT PRECISE LOCALIZATION

Term

1. LATERAL SPINOTHALAMIC TRACT

2.Anterior SPINOTHALAMIC TRACT

Definition
What are the two tracts of the SPINOTHALAMIC SYSTEM?
Term

LATERAL SPINOTHALAMIC TRACT

Definition
the ________ tract senses pain and temperature
Term

anterior SPINOTHALAMIC TRACT

Definition
the ________ tract senses crude touch
Term

DORSAL COLUMN SYSTEM 

Definition

CONSISTS OF LARGE DIAMETER FIBERS THAT TRANSMIT SENSORY INFORMATION WITH GREAT SPEED AND PRECISE LOCALIZATION

Term
FASCICULUS GRACILIS
Definition

DORSAL COLUMN SYSTEM from the LOWER 1/2 of the body

Term

FASCICULUS CUNEATUS

Definition

DORSAL COLUMN SYSTEM

from the UPPER 1/2 of the body

Term

SPINOCEREBELLAR SYSTEM

Definition
CONSISTS OF FIBERS THAT TRANSMIT UNCONSCIOUS PROPRIOCEPTIVE INFORMATION TO THE CEREBELLUM: ALSO TRANSMIT SOME INFORMATION ON PAIN, CRUDE TOUCH AND PRESSURE
Term
PYRAMIDAL SYSTEM
Definition

INCLUDES ALL FIBERS ORIGINATING IN THE PRECENTRAL GYRUS AND PROJECTING ONTO SUBCORTICAL STRUCTURES

Term

LATERAL

CORTICOSPINAL TRACT

Definition

(80% OF CORTICOSPINAL FIBERS)

FIBERS CROSS OVER TO OPPOSITE SIDE OF THE CNS IN THE PYRAMIDAL DECUSSATION IN THE MEDULLA

Term

ANTERIOR

CORTICOSPINAL TRACT

Definition

(20% OF CORTICOSPINAL FIBERS)

CROSSING OVER OCCURS IN THE SPINAL CORD AT THE LEVEL OF SYNAPSE. FIBERS PASS THROUGH THE MEDULLARY PYRAMIDS WITHOUT CROSSING OVER. 

Term

1. RUBROSPINAL TRACT

2. VESTIBULOSPINAL TRACT

3. RETICULOSPINAL TRACT

4. TECTOSPINAL TRACT

Definition
Name the four extrapyrmaidal tracts.
Term
subconcious movements, posture
Definition
What is the function of spinal cord white matter?
Term

UPPER CERVICAL CORD LESION

Definition

SPASTIC QUADRI- PLEGIA, HYPER-REFLEXIA, and LOSS OF SENSATION BELOW THE LEVEL OF THE LESION are symptoms of

Term

LOWER CERVICAL CORD LESION

Definition

FLACCID PARALYSIS OF UPPER LIMBS, SPASTIC PARALYSIS OF LOWER LIMBS, HYPO-REFLEXIA OF UPPER LIMBS, HYPER-REFLEXIA OF LOWER LIMB,

LOSS OF SENSATION BELOW THE LEVEL OF

THE LESION Are symptoms of?

Term

THORACIC CORD LESION

Definition

SPASTIC PARAPLEGIA, HYPER- REFLEXIA,

BELOW LEVEL OF THE LESION, LOSS OF SENSATION BELOW THE LEVEL OF THE LESION are symptoms of?

Term

LUMBAR CORD LESION

Definition

FLACCID PARALYSIS OF LOWER EXTREMITIES, HYPOREFLEXIA OF LOWER EXTREMITIES, LOSS OF SENSATION BELOW THE LEVEL OF THE LESION are symptoms of? 

Supporting users have an ad free experience!