The mammary gland of the dairy cow is composed of millions of milk-producing alveoli, which convert blood components into protein, fat, and lactose.The gland is attached to the body by the median and lateral suspensory ligaments. Milk exits each mammary gland via a teat equipped with a teat canal.he mammary gland of the dairy cow is composed of millions of milk-producing alveoli, which convert blood components into protein, fat, and lactose.
Echolocation is the use of sound waves and echoes to determine where objects are in space. Bats use echolocation to navigate and find food in the dark. To echolocate, bats send out sound waves from their mouth or nose. When the sound waves hit an object they produce echoes. The echo bounces off the object and returns to the bats ears. Bats listen to the echoes to figure out where the object is, how big it is, and its shape. Using echolocation, bats can detect objects as thin as a human hair in complete darkness. Echolocation allows bats to find insects the size of mosquitoes, which many bats like to eat.
Vampire bats made news earlier this week when researchers reported that these bats are able to find blood through a heat-detecting molecule covering nerve endings on their noses. According to ScienceDaily, once an adult vampire bat has found a vein to feed on, it can drink half of its body weight in blood.