The Basic Difference Between Anatomy and Physiology

Week 1 Chapter 1 1. What is the basic difference between anatomy and physiology? (p. 2) ANSWER: Anatomy (a-NAT-Ã… -mÄ“; ana- = up; -tomy = process of cutting) is the science of structure and the relationships among structures. Physiology (fiz†²-Ä“-OL-Ã… -jÄ“; physio- = nature, -logy = study of) is the science of body functions, that is, how the body parts work. 2. Define each of the following terms: atom, molecule, cell, tissue, organ, system, and organism. (p. 6) ANSWER: AtomUnit of matter that makes up a chemical element; consists of a nucleus (containing positively charged protons and uncharged neutrons) and negatively charged electrons that orbit the nucleus. Molecule (MOL-e-kÃ… «l)The chemical combination of two or more atoms covalently†¦show more content†¦5. What are the various planes that may be passed through the body? Explain how each divides the body. (p. 15) ANSWER: A sagittal plane (SAJ-i-tal; sagitt- = arrow) is a vertical plane that divides the body or an organ into right and left sides. More specifically, when such a plane passes through the midline of the body or organ and divides it into equal right and left sides, it is called a midsagittal plane. If the sagittal plane does not pass through the midline but instead divides the body or an organ into unequal right and left sides, it is called a parasagittal plane (para- = near). A frontal plane or coronal plane divides the body or an organ into anterior (front) and posterior (back) portions. A transverse plane divides the body or an organ into superior (upper) and inferior (lower) portions. A transverse plane may also be called a cross-sectional or horizontal plane. Sagittal, frontal, and transverse planes are all at right angles to one another. An oblique plane, by contrast, passes through the body or an organ at an angle between the transverse plane and a sagittal plane or between the tran sverse plane and the frontal plane. Chapter 2 6. Compare the meanings of atomic number, mass number, ion, and molecule. (p. 29) ANSWER: The atomic number, the number of protons, distinguishes the atoms of oneShow MoreRelatedThe Comparison of Nervous Systems in Humans, Cnidarians, Flatworms, and Annelids1671 Words   |  7 Pagesoutput, it would be hard to survive without a nervous system; however, there are different types of nervous systems in various organisms. Humans, cnidarians, flatworms, and annelids all have very diverse nervous systems. There are similarities and differences in each of these beings. Of the fours organisms listed, the nervous systems in humans in the most complex. Their nervous system is divided into two parts, central and peripheral. 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