The heart is one of the most fascinating organs in the body. The body relies on the heart to deliver nutrients and oxygen through the circulation of blood. Answer and Explanation: The correct answer is b) Myocardium. The myocardium is the thickest layer of the ...
Between the two membranes that surround the lungs lies a cavity which is filled with fluid. What is the purpose of these membranes and the fluid filled cavity? How are germ cells set apart from the cells that are constructing the ...
Diploblastic animals only have two germ layers: the inner endoderm and the outer ectoderm. Animals in the phyla Cnidaria and Ctenophora are diploblastic. The
State True or False and justify your answer: The thoracic cavity surrounds and protects the heart and the lungs. State True or False: The alveoli normally empty completely during maximal expiratory efforts. A tooth in a socket is called gomphosis or dent...
Answer to: Fill in the blank. The ___ stage is the stage of labor during which the placenta is expelled from the uterus. By signing up, you'll...
Earthworms are placed in the phylum Annelida. These worms exhibit metamerism, bearing a closed circulatory system and a fluid-filled coelom. Earthworms are hermaphrodites. Answer and Explanation: Mouth, buccal cavity, pharynx, esophagus, crop, gizzard, and intestin...