Lecture 2 Flashcards Preview

Neuro > Lecture 2 > Flashcards

Flashcards in Lecture 2 Deck (27)
Loading flashcards...
1
Q

Nervous System

A

Composed of 2 parts: CNS, PNS

2
Q

Central Nervous System

A

2 Parts: Brain & Spinal Cord,
The part of the nervous system that is responsible for mental processes
Controls perception and discrimination of sensory stimuli

3
Q

Peripheral Nervous System

A

Has 2 Functional Systems: Somatic & Autonomic Nervous Systems

4
Q

Somatic Nervous System

A

Controls conscious sensory perception and volitional movement
2 Main Parts:
Cranial Nerves & Spinal Nerves

5
Q

Autonomic Nervous System

A

Controls glands and the visceral system (involuntary)
2 Main Systems:
Sympathetic & Parasympathetic Systems

6
Q

Sympathetic System

A

Expends Energy Ex. Fight/Flight

7
Q

Parasympathetic System

A

Conserves Energy - brings us back to normal levels after fight/flight.

8
Q

Protections for the CNS

A

Skull/Vertebral Column, Meninges, & Cerebrospinal Fluid

9
Q

Cranial Vault

A

The space in the skull in which the brain sits

10
Q

Foramen Magnum

A

The hole at the base of the skull that allows the spinal column to attach to the skull.

11
Q

Vertebral Column

A
33 Bones:
Cervical - 7
Thoracic - 12
Lumbar - 5
Sacral - 5
Coccygeal - 4
12
Q

Intervertebral Foramena

A

Hole in the vertebra that allows the nerves to pass through

13
Q

Mininges

A

Made up of 3 Membranes:

Dura Mater, Arachnoid, Pia Mater

14
Q

Dura Mater

A

Outermost membrane of the meninges
Very tough, fibrous membrane that lines the inner surface of the skull and spinal column
Provides protective covering for the CNS

15
Q

Epidural/Extradural Hemorrhage

A

Bleeding on top of the dura mater

16
Q

Hematoma

A

The resulting accumulation of blood from an epidural/extradural hemorrhage

17
Q

Dural Reflection

A

The inner layer folds of the dura mater

18
Q

Falx Cerebri

A

The dural reflection that falls between the 2 hemispheres

19
Q

Tentorium Cerebelli

A

The dural reflection that runs between the cerebra hemispheres and the cerebellum

20
Q

Falx Cerebelli

A

Separates the “hemispheres” of the cerebellum

21
Q

Arachnoid

A

Middle membrane of the meninges
Contains no blood vessels
Doesn’t conform to the contours of the brain; no reflections

22
Q

Subarachnoid Space

A

The spaces between the arachnoid and the pia mater that are filled with cerebrospinal fluid

23
Q

Subarachnoid Cistern

A

The number of large cavities between the arachnoid and the pia mater;
Filled with cerebrospinal fluid

24
Q

Pia Mater

A

The innermost membrane of the meninges

Inner surface does NOT have blood vessels, but the outer surface does

25
Q

Subarachnoid Hemorrhage

A

When the blood vessels in the outer surface of the pia mater are damaged and bleed.

26
Q

Cerebrospinal Fluid (CSF)

A

A watery fluid that bathes the entire CNS

Allows the brain to float in the skull

27
Q

The Brain (overview)

A

Divided into 2 parts called hemispheres that are connected by the corpus collosum
Avg. human brain weighs about 3 lbs
Composed of approx. ¾ water and ¼ neurons, glial cells, and connective tissue
For DESCRIPTIVE PURPOSES the brain is divided into different parts: Cerebrum/Cortex, Diencephalon, and Brain Stem.