Animal Responses (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which structures comprise the central nervous system (CNS)?
Which structures comprise the central nervous system (CNS)?
Brain and spinal cord
What type of distinction exists between somatic and autonomic nervous systems?
What type of distinction exists between somatic and autonomic nervous systems?
Functional rather than structural
Which nerves contain both sensory and motor neurons?
Which nerves contain both sensory and motor neurons?
Mixed nerves such as spinal nerves
What response does the sympathetic nervous system mediate?
What response does the sympathetic nervous system mediate?
'Fight-or-flight' response
What percentage of brain mass does the cerebrum account for?
What percentage of brain mass does the cerebrum account for?
Approximately 80%
Why is the cerebral cortex extensively folded?
Why is the cerebral cortex extensively folded?
To increase surface area for more neurons
Which hormone does the hypothalamus trigger from the posterior pituitary during osmoregulation?
Which hormone does the hypothalamus trigger from the posterior pituitary during osmoregulation?
ADH (anti-diuretic hormone)
What is the key difference between anterior and posterior pituitary?
What is the key difference between anterior and posterior pituitary?
Anterior makes hormones; posterior stores them
Which sensory structures does the cerebellum use to maintain balance?
Which sensory structures does the cerebellum use to maintain balance?
Eyes, semicircular canals, proprioceptors
Which three centres are located in the medulla oblongata?
Which three centres are located in the medulla oblongata?
Cardiac, vasomotor, and respiratory