Exam study 2 Flashcards
The coordination of systems in the body is carried out by?
Nervous system and endocrine system
Nerve cells that carry information away from receptors and along the axons to the cell body are called
Sensory neuron
Endocrine System
Hormones
Smell sight
Olfactory nerve
Cones rods
How does the body regulate blood sugar levels without eating for 12 hours
pancreas makes insulin. Insulin helps control your blood sugar levels by assisting the cells that absorb sugar from the bloodstream
What are the effects of too much sugar in the blood
Can increase risk of getting heart disease and stroke, kidney disease, vision problems, and nerve problems.
How is sugar regulated by the body
Insulin, glucagon. rise and fall to keep blood sugar in a normal range.
blood sugar drops too low, the level of insulin declines and other cells in the pancreas release glucagon, which causes the liver to turn stored glycogen back into glucose and release it into the blood.
Hypothalamus
releasing hormones. regulating body temperature.Near pituitary gland
Synapses
Gap between neurons
Chemical messages sent between them
Endocrine
denoting glands which secrete hormones or other products directly into the blood
Exocrine
denoting glands which secrete their products through ducts opening on to an epithelium rather than directly into the blood
Mechanoreceptor
Hearing touch
Photoreceptor
Vision
Thermoreceptor
Touch
Chemoreceptors
Taste smell
Neurotransmitter
chemical substance which is released at the end of a nerve fibre by the arrival of a nerve impulse and, by diffusing across the synapse
Independent variable
The one thing you change. Limited to only one in an experiment .Liquid used to water each plant
Dependent variable
The change that happens because of the independent variable .The height it health of the plant
Controlled variable
Everything you want to remain constant and unchanging. Type of plant used, pot size, a,puny of liquid, soil type
What happens to glycogen when our blood glucose levels increase
Glycogen is stored in the liver and muscle tissue and the overall response is to lower the blood glucose level, returning it to a normal level.
What does the pancreas do
The pancreas contains special cells that sense when there is too much glucose in the blood and then it releases insulin into the bloodstream.
What does the bloodstream do for hormones
The bloodstream carries the hormone to the liver and muscle cells. When the hormone binds to the cell, glucose is taken from the bloodstream into the cell, where it is then converted into glycogen.
2 neurons at a synapse
A nerve Impulse travels along the axon.The impulse reaches the end of the axon. Neurotransmitter chemicals are released from sacs in the axon terminals.Neurotransmitters swim across the synapse. Neurotransmitters reach the dendrite of the next neuron. The receptors on the next dendrite are stimulated by the neurotransmitters.The next neuron fires and the impulse continues along the next neutron
