Women ages 30 through 65 can then be screened every 5 years with Pap and HPV cotesting or every 3 years with a Pap test alone. The guidelines also note that women with certain risk factors may need to have more frequent screening or to continue screening beyond age 65.
Petioles support leaf growth. Also called the leaf stalk, the petiole is actually an extension of the leaf in certain plants. It is the structure that connects the leaf to the stem or trunk of most vascular plants.
External Parts of a Stem. Just like the human body, plants have body parts, too. This lesson will focus on one complex body part of a plant, the stem. The stem is an above-ground part of a plant that provides structural support and connects the root system to the leaves. Stems vary in size, ranging from a small vine to the 30 foot diameter of a tree!