Name and describe the locations and actions of the muscles typically used in breathing
What will be an ideal response
The diaphragm forms the floor of the thoracic cavity. It flattens (contracts) during inspiration to increase the size of the thoracic cavity. The external intercostals are found between the ribs and they act to increase the lateral and anteroposterior dimensions of the thorax. Internal intercostals are also found between ribs and they act by pulling the ribs together to decrease the size of the thoracic cavity. The diaphragm relaxes during expiration to form a dome that decreases the size of the thoracic cavity. The anterior scalenes and the pectoralis minor also assist during forced inspirations.
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The shaft of long bones is called the
A) epiphysis. B) metaphysis. C) diaphysis. D) paraphysis. E) endophysis.
Water is an excellent solvent because
A) it dissolves all solutes. B) water molecules covalently bond with atoms in other molecules. C) it has a high heat capacity. D) it makes up a major part of every cell. E) water molecules are polar.
Microfilaments do not
A) anchor the cytoskeleton to membrane proteins. B) control the consistency of cytoplasm. C) with myosin, produce cell movement. D) provide strength. E) form centrioles.
The hepatic sinusoids
A. transport bile. B. have phagocytic cells in their lining. C. are part of the portal triad. D. connect to the gallbladder. E. do not have a function.