coordination and response Flashcards
role of the cornea
a transparent covering that refracts. light
role of the iris
a muscle that controls how much light enters the pupil.
role of retina
contains a layer of light receptor cells that detect light intensity and colour.
role of the lens
a disc that changes shape in order to focus light on the retina
role of pupil
a hole that allows light to enter the eye
role and effects of adrenaline
comes from ardenal glands
-role is to prepare body for flight or fight response.
-increases breathing rate and heart rate.
roles and effects of insulin
testosterone
is the main male sex hormone.
-development of sexual characteristics in males
oestrogen
main sex hormone in females.
-development of sexual female characteristics.
differentiate between the endocrine and nervous system
-Nervous system includes neurones,spainal cord and brain signal electrical impulses very fast ,which do not last long at all.
-endocrine system consist fo glands which signal chemical hormones in much slower messages, but much longer lasting.
what are the 2 hormones that control blood glucose levels?
-glucagon -insulin
what is homeostasis?
maintaining a constant internal environment in the body in terms of regulating blood pressure,glucose concentration levels, water concentration levels, and temperature.
where is glucose stored as glycogen?
liver and muscles
