14. Coordination and control
A section of Biology, 5090
Listing 10 of 334 questions
Humans have receptors to detect stimuli in their environment and a nervous system to coordinate responses to these stimuli. Complete the table showing different parts of the nervous system, their location in the human body and some of their functions. One row has already been completed. part of the nervous system location in the body function medulla brain controls automatic functions such as breathing nerve in body carries nerve impulses from the central nervous system to muscles and glands brain problem solving, language, memory and interpreting visual information brain regulates body temperature relay neurone cerebellum fine motor control and balance A man is threading a needle. To do this, each of the man’s eyes produces a focused image of the needle. Explain how different parts of the eye function to produce a focused image of a near object.
5090_w22_qp_21
THEORY
2022
Paper 2, Variant 1
View
Receptors receive stimuli and convert them into electrical impulses. shows the pathway taken by electrical impulses in a reflex action. Complete by writing the name of the appropriate component on the dotted lines. receptor central nervous system response The brain is one part of the central nervous system. is a diagram of the human brain. A B Damage to the brain can sometimes occur as the result of an accident. Name the parts of the brain labelled A and B in and suggest a problem that may be experienced by a person who has damage to that part of the brain. part A problem caused by damage part B problem caused by damage Scientists are able to treat people with some types of brain damage. They may do this by injecting the patient with cells taken from another person . These cells then travel to the brain where they divide and specialise to become groups of fully functioning brain cells. State the type of cell division that takes place when the cells that have been injected reach the patient’s brain. State the term used to describe a group of cells that are specialised to perform a specific function. Female patients were injected with cells from male donors. After a period of time, the scientists examined brain cells from these patients and looked for groups of brain cells containing the Y chromosome. Explain why finding groups of brain cells containing the Y chromosome would suggest to the scientists that the treatment may have been successful.
5090_s13_qp_21
THEORY
2013
Paper 2, Variant 1
View
Questions Discovered
334