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
symptoms of type 1 diabetes
-thrist
-blurred vision
-weakness
-weight loss
