The respiratory system brings oxygen to cells in the body. And it removes waste, carbon dioxide. The Excretory system removes wast as well from the digestive system and from blood out of the body.
Answer:
The correct option is BLOOD CALCIUM LEVEL.
Explanation:
The options attached to this question are given below:
A. Filtration membrane integrity
B. Systemic blood pressure
C. Blood calcium level
D. Renal artery/arteriole diameters
Kidney is an excretory organ, which functions by filtering waste products out of the blood. The rate at which the kidneys filter the blood depend on some factors; such factors include: water intake, systemic blood pressure, vasoconstriction, dehydration, filtration membrane integrity etc.
Blood calcium level does not have any effect on the rate at which the kidneys filter the blood.
Answer:
Explanation:
An index fossil is used for learning the age of geological periods.
Answer:
The formation and release of substance from a cell or structure is called secretion.
Explanation:
There are many biochemical compounds such as hormones,enzymes which are form in specific organ of the body and is then secreted from its source organ to perform their biological functions.
For example Insulin hormone is produced by beta cells of islets of langerhans of pancreas and then releases to the blood stream to regulate the blood sugar level.