Organisation & histology of the nervous system WK4 L4

Question 1

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

Answer 1

CENTRAL NERVOUS SYSTEM & PERIPHERAL NERVOUS SYSTEM

Question 2

WHAT IS THE CENTRAL NERVOUS SYSTEM COMPOSED OF?

Answer 2

BRAIN & SPINAL CHORD ENCOLSED IN BONY COVERINGS

Question 3

WHAT IS THE PERIPHERAL NERVOUS SYSTEM COMPOSED OF?

Answer 3

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

Question 4

WHAT IS A NERVE?

Answer 4

BUNDLES OF AXONS IN CONNECTIVE TISSUE

Question 5

WHAT IS GANGLIA?

Answer 5

SWELLINGS OF CELL BODIES IN A NERVE

Question 6

WHAT ARE THE SUBSECTIONS OF THE PERIPHERAL NERVOUS SYSTEM?

Answer 6

SENSORY DIVISION & MOTOR DIVISION

Question 7

WHAT DOES THE SENSORY DIVISION DO?

Answer 7

SENDS SENSORY INFORMATION TO CNS - RECEPTOR

Question 8

WHAT ARE THE TWO PARTS OF THE SENSORY DIVISION?

Answer 8

VISCERAL & SOMATIC SENSORY

Question 9

WHAT IS THE VISCERAL SENSORY DIVISION?

Answer 9

CARRIES SIGNALS FROM THE VISCERA OF THORACIC AND ABDOMINAL CAVITIES

Question 10

WHAT IS THE SOMATIC SENSORY DIVISION?

Answer 10

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

Question 11

WHAT DOES THE MOTOR DIVISION DO?

Answer 11

COMPLETES MOTOR COMMANDS RECEIVED FROM CNS - EFFECTOR

Question 12

WHAT ARE THE TWO PARTS OF THE MOTOR DIVISON?

Answer 12

VISCERAL & SOMATIC MOTOR

Question 13

WHAT IS THE VISCERAL MOTOR DIVISION?

Answer 13

CARRIES SIGNALS TO GLANDS, CARDIAC MUSCLE & SMOOTH MUSCLE

Question 14

WHAT IS THE SOMATIC MOTOR DIVISION?

Answer 14

CARRIES SIGNALS TO SKELETAL MUSCLES

Question 15

WHAT ARE THE FUNCTIONAL CLASSES OF NEURONS?

Answer 15

SENSORY - INTERNEURONS - MOTOR

Question 16

WHAT DO SENSORY NEURONS DO?

Answer 16

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

Question 17

WHAT DO INTERNEURONS DO?

Answer 17

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

Question 18

WHAT DO MOTOR NEURONS DO?

Answer 18

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

Question 19

WHAT IS THE CELL BODY OF A NEURON CALLED?

Answer 19

SOMA OR PERIKARYON

Question 20

WHAT IS IN THE CELL BODY OF A NEURON?

Answer 20

NUCLEUS AND MOST ORGANELLES

Question 21

WHAT ARE THE NEURONS CALLED IN THE CNS?

Answer 21

NUCLEI

Question 22

WHAT ARE THE NEURONS CALLED IN THE PNS?

Answer 22

GANGLIA

Question 23

Answer 23

DENDRITES

Question 24

WHAT DO THE DENDRITES DO?

Answer 24

RECIEVES INCOMING SIGNALS

Question 25

Answer 25

SOMA (CELL BODY)

Question 26

WHAT DOES THE CELL BODY DO?

Answer 26

HOLD NUCELUS AND ORGANELLS

Question 27

Answer 27

AXON HILLOCK

Question 28

WHAT DOES THE AXON HILLOCK DO?

Answer 28

PROPEGATES AND PRODUCES THE SIGNAL THAT GETS SENT

Question 29

Answer 29

AXON

Question 30

WHAT DOES THE AXON DO?

Answer 30

CARRIERS THE NERVE SIGNALS ACROSS CELL

Question 31

Answer 31

SYNAPTIC TERMINALS

Question 32

WHAT DO THE SYNAPTIC TERMINALS DO?

Answer 32

COMUNICATES WITH CELLS/MUSCLES/GLANDS

Question 33

ARE NEURONS MYLENATED?

Answer 33

YES

Question 34

WHAT DOES THE MYELIN SHEATH DO?

Answer 34

PROTECTS THE SIGNAL TRAVELLING ALONG THE NEURON -

Question 35

WHAT ARE THE GLIA TYPES IN THE CNS?

Answer 35

OLIGODENDROCYTES - ASTROCYTES - EPENDYMAL - MICROGLIA

Question 36

WHAT DO THE OLIGODENDROCYTES DO?

Answer 36

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

Question 37

WHAT DO THE ASTROCYTES DO?

Answer 37

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

Question 38

WHAT DO THE EPENDYMAL CELLS DO?

Answer 38

PRODUCE CEREBRAL SPINAL FLUID WITHIN BRAIN VENTRICLES

Question 39

WHAT DOES THE MICROGLIA DO?

Answer 39

IMMUNE CELLS OF CNS

Question 40

WHAT ARE THE GLIA TYPES IN THE PNS?

Answer 40

SCHWANN CELLS - SATELLITE CELLS

Question 41

WHT DO THE SCHWANN CELLS DO?

Answer 41

MEYLIN SHEATH THAT WRAPS AROUND NEURONS IN PNS TO MEYLINATE THEM

Question 42

WHAT DO THE SATELLITE CELLS DO?

Answer 42

MEYLINATE THE CELL BODY IN PNS - REGULATES EXTERNAL ENVIRONMENT

Question 43

WHAT ARE NEURONS IN THE PNS CALLED?

Answer 43

GANGLIA

Question 44

WHAT ARE NEURONS IN THE CNS CALLED?

Answer 44

CELL BODIES