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BMS165 > Organisation & histology of the nervous system WK4 L4 > Flashcards

Organisation & histology of the nervous system WK4 L4 Flashcards

1
Q

WHAT ARE THE TWO MAIN ANATOMICAL SUB DIVISIONS OF THE NERVOUS SYSTEM?

A

CENTRAL NERVOUS SYSTEM & PERIPHERAL NERVOUS SYSTEM

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2
Q

WHAT IS THE CENTRAL NERVOUS SYSTEM COMPOSED OF?

A

BRAIN & SPINAL CHORD ENCOLSED IN BONY COVERINGS

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3
Q

WHAT IS THE PERIPHERAL NERVOUS SYSTEM COMPOSED OF?

A

ALL NERVOUS SYSTEM EXCLUDING BRAIN AND SPINAL CHORD - NERVES & GANGLIA

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4
Q

WHAT IS A NERVE?

A

BUNDLES OF AXONS IN CONNECTIVE TISSUE

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5
Q

WHAT IS GANGLIA?

A

SWELLINGS OF CELL BODIES IN A NERVE

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6
Q

WHAT ARE THE SUBSECTIONS OF THE PERIPHERAL NERVOUS SYSTEM?

A

SENSORY DIVISION & MOTOR DIVISION

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7
Q

WHAT DOES THE SENSORY DIVISION DO?

A

SENDS SENSORY INFORMATION TO CNS - RECEPTOR

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8
Q

WHAT ARE THE TWO PARTS OF THE SENSORY DIVISION?

A

VISCERAL & SOMATIC SENSORY

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9
Q

WHAT IS THE VISCERAL SENSORY DIVISION?

A

CARRIES SIGNALS FROM THE VISCERA OF THORACIC AND ABDOMINAL CAVITIES

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10
Q

WHAT IS THE SOMATIC SENSORY DIVISION?

A

CARRIES SIGNALS FROM RECEPTORS IN SKIN, MUSCLES, JOINTS, BONES

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11
Q

WHAT DOES THE MOTOR DIVISION DO?

A

COMPLETES MOTOR COMMANDS RECEIVED FROM CNS - EFFECTOR

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12
Q

WHAT ARE THE TWO PARTS OF THE MOTOR DIVISON?

A

VISCERAL & SOMATIC MOTOR

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13
Q

WHAT IS THE VISCERAL MOTOR DIVISION?

A

CARRIES SIGNALS TO GLANDS, CARDIAC MUSCLE & SMOOTH MUSCLE

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14
Q

WHAT IS THE SOMATIC MOTOR DIVISION?

A

CARRIES SIGNALS TO SKELETAL MUSCLES

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15
Q

WHAT ARE THE FUNCTIONAL CLASSES OF NEURONS?

A

SENSORY - INTERNEURONS - MOTOR

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16
Q

WHAT DO SENSORY NEURONS DO?

A

DETECT CHANGED INSIDE AND OUTSIDE OF BODY - INFORMATION TRANSMITTED INTO BRAIN OR SPINAL CHORD

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17
Q

WHAT DO INTERNEURONS DO?

A

PROCESS, STORE & RETRIEVE INFORMATION - SITS BETWEEN SENSORY AND MOTOR PATHWAYS IN CNS - 90% OF OUR NEURONS ARE INTERNEURONS

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18
Q

WHAT DO MOTOR NEURONS DO?

A

SENDS SIGNALS OF TO MUSCLES AND GLANDS - ORGANS INNERVATED BY MOTOR NEURONS THETA CARRY OUT RESPONSES ARE CALLED EFFECTORS

19
Q

WHAT IS THE CELL BODY OF A NEURON CALLED?

A

SOMA OR PERIKARYON

20
Q

WHAT IS IN THE CELL BODY OF A NEURON?

A

NUCLEUS AND MOST ORGANELLES

21
Q

WHAT ARE THE NEURONS CALLED IN THE CNS?

A

NUCLEI

22
Q

WHAT ARE THE NEURONS CALLED IN THE PNS?

A

GANGLIA

23
Q
A

DENDRITES

24
Q

WHAT DO THE DENDRITES DO?

A

RECIEVES INCOMING SIGNALS

25
Q
A

SOMA (CELL BODY)

26
Q

WHAT DOES THE CELL BODY DO?

A

HOLD NUCELUS AND ORGANELLS

27
Q
A

AXON HILLOCK

28
Q

WHAT DOES THE AXON HILLOCK DO?

A

PROPEGATES AND PRODUCES THE SIGNAL THAT GETS SENT

29
Q
A

AXON

30
Q

WHAT DOES THE AXON DO?

A

CARRIERS THE NERVE SIGNALS ACROSS CELL

31
Q
A

SYNAPTIC TERMINALS

32
Q

WHAT DO THE SYNAPTIC TERMINALS DO?

A

COMUNICATES WITH CELLS/MUSCLES/GLANDS

33
Q

ARE NEURONS MYLENATED?

A

YES

34
Q

WHAT DOES THE MYELIN SHEATH DO?

A

PROTECTS THE SIGNAL TRAVELLING ALONG THE NEURON -

35
Q

WHAT ARE THE GLIA TYPES IN THE CNS?

A

OLIGODENDROCYTES - ASTROCYTES - EPENDYMAL - MICROGLIA

36
Q

WHAT DO THE OLIGODENDROCYTES DO?

A

MEYLIN SHEATH THAT WRAPS AROUND NEURONS IN CNS TO MEYLINATE THEM AND CONNECTS TO OTHER NEURONS

37
Q

WHAT DO THE ASTROCYTES DO?

A

INVOLVED IN BLOOD BRAIN BARRIER - REGULATES WHAT DOES AND DOES NOT GO INTO THE BLOOD STREAM SURROUNDING THE BRAIN - REGULATES EXTERNAL ENVIRONMENT

38
Q

WHAT DO THE EPENDYMAL CELLS DO?

A

PRODUCE CEREBRAL SPINAL FLUID WITHIN BRAIN VENTRICLES

39
Q

WHAT DOES THE MICROGLIA DO?

A

IMMUNE CELLS OF CNS

40
Q

WHAT ARE THE GLIA TYPES IN THE PNS?

A

SCHWANN CELLS - SATELLITE CELLS

41
Q

WHT DO THE SCHWANN CELLS DO?

A

MEYLIN SHEATH THAT WRAPS AROUND NEURONS IN PNS TO MEYLINATE THEM

42
Q

WHAT DO THE SATELLITE CELLS DO?

A

MEYLINATE THE CELL BODY IN PNS - REGULATES EXTERNAL ENVIRONMENT

43
Q

WHAT ARE NEURONS IN THE PNS CALLED?

A

GANGLIA

44
Q

WHAT ARE NEURONS IN THE CNS CALLED?

A

CELL BODIES

BMS165 (39 decks)

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