
Ch 34 Circulatory System Flashcard
Flashcard
•
Biology
•
University
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the primary gas that increases in the blood when you hold your breath, leading to the urge to breathe?
Back
Rising CO2 levels.
2.
FLASHCARD QUESTION
Front
What hormone is responsible for increasing heart rate in response to stress or excitement?
Back
Epinephrine.
3.
FLASHCARD QUESTION
Front
How does pH change during exercise and what effect does it have on breathing rate?
Back
pH decreases, which causes breathing rate to increase.
4.
FLASHCARD QUESTION
Front
What is the main function of circulatory systems in relation to diffusion?
Back
They compensate for the slow rate at which diffusion occurs over large distances.
5.
FLASHCARD QUESTION
Front
What is the name of the fluid that circulates in the circulatory system of arthropods?
Back
Hemolymph.
6.
FLASHCARD QUESTION
Front
Define 'circulatory system'.
Back
A system that transports nutrients, gases, hormones, blood cells, and waste products throughout the body.
7.
FLASHCARD QUESTION
Front
What role does carbon dioxide play in regulating breathing?
Back
Increased levels of CO2 stimulate the urge to breathe.
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