The parathyroid glands are small endocrine glands in the neck of humans and other tetrapods that produce parathyroid hormone. Humans usually have four parathyroid glands, variably located on the back of the thyroid gland, although considerable variation exists.Parathyroid hormone and calcitonin (one of the hormones made by the thyroid gland) have key roles in regulating the amount of calcium in the blood and within the bones.he parathyroid glands are two pairs of glands usually positioned behind the left and right lobes of the thyroid. Each gland is a yellowish-brown flat ovoid that resembles a lentil seed, usually about 6 mm long and 3 to 4 mm wide, and 1 to 2 mm anteroposteriorly. There are typically four parathyroid glands.
The life cycle of the ladybug is between four to six weeks. In the spring the adults lay up to three hundred eggs in an aphid colony. The eggs hatch in two to five days. The newly hatched larvae feed on aphids for up to three weeks, and then they enter the pupa stage.The adult ladybug emerges about a week later. However, they usually do not have their spots for their first 24 hours of adulthood.There may be as many as six generations of ladybugs hatched in a year.he life cycle of the ladybug is between four to six weeks. In the spring the adults lay up to three hundred eggs in an aphid colony. The eggs hatch in two to five days. The newly hatched larvae feed on aphids for up to three weeks, and then they enter the pupa stage.
Activity 1: Find Ladybug Larvae. A ladybug larva is a baby ladybug. Ladybugs go through different stages, and for most of their lives they don't even look like the pretty red and black ones we are used to seeing! Your parent or teacher can tell you more about the different stages of a ladybug's life cycle. When you have a couple ladybugs in your jar, take a closer look at them with your magnifying glass. 2  Draw pictures of what they look like from different angles (underneath, from above, or from the side) and write down things that you think might be helpful 'clues' for learning more about the life of a ladybug.