b2.2 control in the human body Flashcards
(12 cards)
What is the role of the pancreas in blood sugar regulation?
It produces insulin and glucagon to control blood glucose levels.
What happens during vasodilation?
Blood vessels widen to increase blood flow and release heat.
What is vasoconstriction?
The narrowing of blood vessels to reduce blood flow and conserve heat.
How does sweating help cool the body?
Sweat evaporates from the skin, removing heat.
What does ADH do?
Controls water reabsorption in kidneys to regulate water balance.
Where is ADH secreted from?
The pituitary gland.
How does the body respond when blood glucose levels are low?
The pancreas releases glucagon, which converts glycogen into glucose.
Why is homeostasis important?
It keeps internal conditions stable for cells to function properly.
What is the central nervous system (CNS)?
The CNS consists of the brain and spinal cord and processes information.
What is the peripheral nervous system (PNS)?
The PNS includes all other nerves that carry signals to and from the CNS.
What is the difference between the CNS and PNS?
The CNS processes information, while the PNS carries signals to and from the CNS.
How does a synapse transmit an impulse?
Neurotransmitters are released into the gap between neurons, cross it, and bind to receptors on the next neuron to pass the impulse on.
