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Combined Science: Biology

GCSE · Edexcel · higher

QuestionsFlashcards

Disease
Defence Against Disease
Development of Medicines
- Antibiotics
  4
- Discovery & Development of New Drugs
  6
Non-Communicable Diseases
- Lifestyle & Non-Communicable Disease
  8
- Cardiovascular Disease
  6

The Organism in the Environment
Human Influences on the Environment
- Human Impact on Biodiversity
  6
- Benefits of Maintaining Biodiversity
  6
Cycles within Ecosystems

The Human Nervous System Flashcards

All 7 cards in this deck

Which two organs make up the central nervous system (CNS)?: The brain and the spinal cord.
In a sensory neurone, what is the name of the part that carries the impulse from the receptor towards the cell body?: The dendron.
(The axon carries impulses away from the cell body.)
What is the function of the myelin sheath around the axon of a neurone?: It insulates the axon and speeds up transmission of the electrical impulse.
In which type of neurone is the cell body found part-way along the neurone, on a side branch between a long dendron and an axon?: The sensory neurone.
True or false? A relay neurone has a long axon that carries impulses from the CNS to an effector.: False. That describes a motor neurone; a relay neurone is short and connects neurones within the CNS.
What is a receptor?: A group of cells that detects a stimulus (a change in the environment), e.g. light receptors in the eye.
What are the two types of effector, and how does each respond?: Muscles, which contract, and glands, which secrete hormones.