which of the following helmiths feeds on blood
Necator americanus Ancylostoma duodenale
title: Hematophagy text: Hematophagy Hematophagy (sometimes spelled haematophagy or hematophagia) is the practice by certain animals of feeding on blood (from the Greek words αἷμα "haima" "blood" and φάγειν "phagein" "to eat"). Since blood is a fluid tissue rich in nutritious proteins and lipids that can be taken without great effort, hematophagy has evolved as a preferred form of feeding for many small animals, such as worms and arthropods. Some intestinal nematodes, such as Ancylostomids, feed on blood extracted from the capillaries of the gut, and about 75 percent of all species of leeches (e.g., "Hirudo medicinalis"), a free-living worm, are hematophagous. Some title: Head and neck anatomy text: growth hormone (GH), Luteinizing hormone (LH), Follicle stimulating hormone (FSH), Adrenocorticotropic hormone (ACTH), Thyroid-stimulating hormone (TSH), Prolactin (PRL), and the posterior lobe secretes: Antidieuretic hormone (ADH), and Oxytocin. There is an intermediate lobe, in adult humans it is just a thin layer of cells between the anterior and posterior pituitary, nearly indistinguishable from the anterior lobe. The intermediate lobe produces melanocyte-stimulating hormone (MSH). In the neck are the thyroid and parathyroid glands, that secrete hormones that control metabolism and blood calcium levels. The four parathyroid glands are situated upon the back surface of the thyroid gland. The respiratory system begins title: The Lord of the Rings Online: Helm's Deep text: land is among the least rocky in the Mark, and while a few chestnuts and elms dot the landscape, most of it is treeless. The Broadacres is ruled by Fríthild, the sole female Reeve in the Mark. A shield-maiden by birth and training, she was the only child of the former knight, Fríthgist, who raised her like a son. When Éowyn visited Edoras as a child, Fríthild treated her like a foster-sister. Ever since, Éowyn has wanted to follow her footsteps and wield a sword in battle. The men of Dunland, with help from Saruman's Orcs and Uruk-hai, control a title: Arachnid text: Arachnid blood is variable in composition, depending on the mode of respiration. Arachnids with an efficient tracheal system do not need to transport oxygen in the blood, and may have a reduced circulatory system. In scorpions and some spiders, however, the blood contains haemocyanin, a copper-based pigment with a similar function to haemoglobin in vertebrates. The heart is located in the forward part of the abdomen, and may or may not be segmented. Some mites have no heart at all. Arachnids are mostly carnivorous, feeding on the pre-digested bodies of insects and other small animals. Only in the harvestmen and title: Thoracic duct text: starts from the level of the twelfth thoracic vertebrae (T12) and extends to the root of the neck. It drains into the systemic (blood) circulation at the angle of the left subclavian and internal jugular veins as a single trunk, at the commencement of the brachiocephalic vein. It also collects most of the lymph in the body other than from the right thorax, arm, head, and neck which are drained by the right lymphatic duct. The thoracic duct originates in the abdomen from the confluence of the right and left lumbar trunks and the intestinal trunk, forming a significant pathway