Receptors that provide animals with information from their internal environment are located in
a. the eyes and ears
b. blood vessels and organs
c. erythrocytes and leukocytes

Receptors that provide animals with information from their internal environment are located in B. BLOOD VESSELS AND ORGANS.

Chemo receptors - neurons that detect chemicals
mechanoreceptors - neurons that detect touch
olfactory receptors - neurons that detect smell
photoreceptors - neurons that detect light
thermoreceptors - neurons that deted temperature

receptors that provide animals with information from the external environment are located in their ears,skin, tongue, eyes, nose