The primary circulatory medium in echinoids is( ).
A: blood
B: hemal fluid
C: plasma
D: coelomic fluid
E: pyloric cecae
A: blood
B: hemal fluid
C: plasma
D: coelomic fluid
E: pyloric cecae
举一反三
- Blood is a fluid consisting of plasma which accounts for less than 1%.
- The main difference between interstitial fluid and plasma is A: The protein concentration is higher in plasma B: The Na+ concentration is higher in plasma C: The protein concentration is higher in interstitial fluid D: The Na+ concentration is higher in interstitial fluid E: The organic acid concentration is higher in plasma
- The main difference between interstitial fluid and plasma is A: The protein concentration is higher in plasma B: The Na+ concentration is higher in plasma C: The protein concentration is higher in interstitial fluid D: The Na+ concentration is higher in interstitial fluid
- Where is the highest partial pressure of carbon dioxide in the body A: Venous blood B: capillary blood C: arterial blood D: interstitial fluid E: intracellular fluid
- What are the factors attributing to the increase of the force on the walls of the blood vessels A: Extra fluid B: The properties fluid C: Narrower blood vessels D: Environment facto