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Lecture 12
Terms, Vocabulary & Concepts
5
Anatomy
Undergraduate 3
02/21/2012

Additional Anatomy Flashcards

 


 

Cards

Term
Central Nervous System (CNS)
Definition
Consists of the brain and spinal cord.
Term
Peripheral Nervous System (PNS)
Definition

Any neural element outside the brain or spinal cord; such as the nerve cells and processes, cranial nerves, and spinal nerves.

 

Can be further ssubdivided into:

  • Somatic NS (SNS) - voluntary skeletal muscle
  • Autonomic NS (ANS) - automatic motor and sensory impulses
    • Sympathetic - "emotional" responses, upregulates system (fight/flight/fright)
    • Parasympathetic - downregulates systems (rest/recovery/relaxation)
 
Term
Meninges
Definition
  • Dura Mater - The outermost layer of the brain made up of fibrous connective tissue. It has two layers: the superficial layer attached to the periosteum of the skull, and a deeper layer that externally covers the brain and continues as the spinal dura matter. Separates the two lobes via the Falx cerebri.

Subdural Space

  • Arachnoid mater - Middle layer.Does not dip into the sulci. 

Subarachnoid Space

  • Pia Mater - The innermost layer. Clings tightly to the brain and follows all the convolutions.
Term
Surface Markigns of the Cerebral
Definition
  • Gyrus/Gyri - ridges
  • Sulcus/Sulci - shallow grooves (what gives the brain that squiggly look)
  • Fissures - deep grooves that visibly divide regions of the brain
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