__________ are the smallest, most fragile blood vessels.
(1 point)
Responses
Veins
Veins
Arteries
Arteries
Capillaries
Capillaries
Alveoli
Whats the answer
(1 point)
Responses
Veins
Veins
Arteries
Arteries
Capillaries
Capillaries
Alveoli
Whats the answer