Brain structure

Question 1

osmoreceptors

Answer 1

detect a change in water potential

Question 2

hypothalamus

Answer 2

regulate temperature and make hormones for the pituitary glands

Question 3

pituitary glands

Answer 3

secrete hormones and stimulates other glands

Question 4

thermoreceptors

Answer 4

detect temperature

Question 5

cerebellum

Answer 5

controls balance, muscle coordination and posture

Question 6

medulla oblongata

Answer 6

controlling heart rate and blood pressure

Question 7

cerebrum

Answer 7

vision, hearing, learning and thinking

Question 8

controlling high blood pressure +effector

Answer 8

detected by baroreceptors,

a nerve impulse is sent to the medulla which sends it along to the vagus nerve,

this secretes acetylcholine which binds to the receptors on the SAN

the effector is the cardiac muscles

heart rate slows down

Question 9

controlling low blood pressure +effector

Answer 9

detected by baroreceptors

impulses are sent to the medulla which sends the impulse along to the accelerator nerve

this secretes noradrenaline which binds to the receptors on the SAN

the effector is the cardiac muscles

heart rate speeds up

Question 10

high blood Oxygen, low Carbon dioxide or high pH levels

Answer 10

detected by chemoreceptors

a nerve impulse is sent to the medulla which sends it along to the vagus nerve,

this secretes acetylcholine which binds to the receptors on the SAN

the effector is the cardiac muscles

heart rate decreases

Question 11

low blood Oxygen, high Carbon dioxide or low pH levels

Answer 11

detected by chemoreceptors

impulses are sent to the medulla which sends the impulse along to the accelerator nerve

this secretes noradrenaline which binds to the receptors on the SAN

the effector is the cardiac muscles

heart rate increases