Excretory System
What is the main organ of the excretory system?
kidneys
Which part of the brain is the main monitor ( will pick up changes in temperature, water volume etc)?
Hypothalamus
What is the role of the Ciruculatory System?
Pump blood through the body, delivering Oxygen to cells
What does the endocrine system release?
hormones
What is the smallest unit of organisation in the body?
cells
Name 3 substances that are excreted form the body?
urine
carbon dioxide
sweat
Name given to the process of controlling temperature/heat in the body
thermoregulation
In which direction do arteries and veins pump blood?
(towards the heart or away from the heart)
Arteries- pump blood AWAY form the heart
Veins- pump blood towards the heart
Where are hormones released from?
glands
Name 3 things the body needs to survive?
Oxygen
Water
Nurtrients
What is the purpose of the kidneys?
Filter blood
Substances the body needs get reabsorbed. Substances the body has too much of, get filtered into urine.
Does shivering (relaxation/constriction) of muscles increase or decrease body temperature?
increase body temperature
What are the 3 main blood vessels called?
Arteries
Capillaries
Veins
Name 3 things hormone can help control?
mood
appetite
growth
reproduction
sleep cyle
temperature
Put the following into order from smallest to largest in the human body
tissue
organ system
organ
cell
cell (smallest)
tissue
organ
organ system
Describe what happens if body has a high volume of water in blood?
Hypothalamus detects high water volume
Hormone released to kidney
Kidney filters more water into urine
Water volume decreases back to normal state
Is vasoconstriction narrowing or widening of blood vessels?
Is vasodilation narrowing or widening of blood vessels?
Vasoconstriction- narrowing of blood vessels
Vasodilation- widening of blood vessels
How many chambers does the heart have?
4
releases hormones that control homeostasis based
on information from the brain
Hypothalamus
Give an example of a cell, tissue, organ and organ system in either:
a.) nervous system
b.) excretory system
c.) muscular system
d.) digestive system
e.) cardiovascular (circulatory) system
nerve cell (neruron)
nerve tissue
brain/spinal cord/ nerves
nervous system
Hypothalamus detects low water volume
Hormone released to kidney
Kidney reabsorbs more water into blood
Water volume increases back to normal state
Describe Vasoconstriction
reduces the volume of blood flowing near the skin surface, and reduces the amount of heat lost from the body, therefore increasing body temperature.
What gas does the blood deliver to cells?
What gas does the blood remove from cells?
Delivers Oxygen
Removes Carbon Dioxide
What is the master gland in the brain called?
Pituitary gland
refers to stability within a cell or the body. It is an organism’s ability to keep a constant internal environment
Homeostasis