12323548
Description
Flashcards by khadija khalif, updated more than 1 year ago
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Created by khadija khalif
almost 7 years ago
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| Question | Answer |
| WHAT IS THE HUMAN NERVOUS SYSTEM? | THE nervous system is a communication network the controls all the other system. |
| WHAT ARE THE TWO MAIN PARTS OF HUMAN NERVOUS SYSTEM? | CENTRAL NERVOUSE SYSTEM. & PERIPHERAL NEVOUS SYSTEM. |
| TWO MAIN PARTS OF CENTRAL NERVOUS SYSTEM? | THE TWO MAIN PARTS OF CENTRAL NERVOUS SYSTEM ARE THE BRAIN AND SPINAL CORD. |
| THE TWO MAIN PARTS OF PERIPHERAL NERVOUS SYSTEM? | THE TWO MAIN PARTS OF PERIPHERAL NERVOUS SYSTEM ARE THE SENSORY RECEPTORS AND NERVES. |
| WHAT IS THE ANOTHER NMAE FOR NERVE CELLS? | NEURONS |
| WHAT DO NEURONS DO? | NEURONS ARE SPECIALISED CELLS THAT TRANSMIT ELECTRICAL MESSAGES FROM ONE PART TO ANOTHER. |
| WHAT ARE THE MAIN PARTS OF NEURONE? | AXON, AXON TERMINALS, CELLS BODY AND DENDRITES. |
| WHAT IS THE CELL BODY? | THE CELL BODY CONTAINS THE NUCLEUS, WHICH IS THE CONTRL CENTER OF THE CELL. |
| WHAT ARE DENDRITES? | THE DENDRITES BRANCH OUT FROM THE CELL BODY AND RECEIVED MESSAGES FROM OTHER NERVE CELLS. |
| WHAT IS THE AXON? | THE AXON OR NERVE FIBRE SENDS NERVE IMPULSES IN ONLY ONE DIRECTION AWAY FROM THE CELL BODY. |
| WHAT ARE SENSORY NEURONS? | THEY HAVE SPECIALISED RECEPTORS, WHICH ARE SENSITIVE TO STIMULI SUCH AS HEAT OR LIGHT. |
| WHAT ARE EFFECTORS? | EFFECTORS ARE MUSCLES OR GLANDS{ TISSUES THAT SECRETE HORMONES} THAT TRANSLATE THE MESSAGES INTO ACTIONS. |
| WHAT DOES A MYELIN SHEATH DO? | THE MYELIN SHEATH ELECTRICALLY INSULATES THE NEURONS FROM EACH OTHER AND INCREASES THE SPEED OF THE NERVE IMPULSE. |
| HOW MANY NEURONS DOES HUMAN BRAIN CONTAIN? |
IT CONTAINS ABOUT 100 BILLION NEURONS AND HAS AN AVERAGE VOLUME OF 1200-1400ML.
Image:
B12 (binary/octet-stream)
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