Heart
Primary muscular organ
What is the heart?
Do arteries carry blood away or to the heart
Are capillaries bigger or smaller than veins?
smaller
How do the veins get blood?
Veins get its blood from the capillaries, and return it to the heart
How many chambers does a frog heart have
3 chambers
What are the 4 chambers of the heart
the upper/lower, and left/right chambers?
What is the main function of arteries?
It carries oxygen rich-blood away from the heart and delivers blood to various organs and tissues with the help of capillaries.
Do the capillaries give or get blood from the arteries?
They get blood from the arteries
To the heart
What type of circulatory system do frogs have
Closed
Two types of blood flowing in the heart
What is oxygen-rich and oxygen-poor blood?
Name the 3 types of arteries.
Elastic, muscular, arterioles
At most how far away is a capillary from a living cell?
At most 1 mm
What are the veins made of?
Tubes of muscle
How many blood circuits do humans have
Two
What diffuses out of the blood
CO2
Describe the function and structure of elastic arteries.
Elastic arteries are flexible. They receive blood directly from the heart and help maintain a constant blood pressure gradient when heart contracts.
How do the nutrients and oxygen get from the capillaries to the cells?
Diffusion
How do the veins keep the blood flowing in one direction?
Valves in the veins only allow flow in one direction
Where do the 3 circuits of blood vessels transport blood to and why?
The heart, the body, and to the skin. The heart to pick up more oxygen, the body to give nutrients and oxygen to the body, and the skin to perform gas exchange
The heart is made up of this
What is cardiomyocytes?
What are the three layers of arteries?
Tunica extrema, tunica media, tunica intima
What are the types of tissue that capillaries are made of?
Endothelium and connective tissue
What percentage of the bodies blood is usually in the veins?
Veins hold about 75% percent of blood in your body
Name the three circuits for blood vessels.
Pulmonary, systemic, pulmocutaneous