Can you answer 15 to 17 please with a short answers. he circulatory system of fi
ID: 253374 • Letter: C
Question
Can you answer 15 to 17 please with a short answers. he circulatory system of fishes have a pulmonary circuit? Explain your answer nmaist of gills to the pharynx, explain the absence of a trachea in fishes and the need for a trachea in mammals. 16. What is the role of the four-chambered hearts of birds and mammals in maintaining a warm body temperature? 17. a. Which of the animals studied in this laboratory exercise have a rib cage? Explain the importance of a rib cage to respiration. b. Which of the animals studied in this laboratory exercise have a diaphragm? Explain the importance of a diaphragm to respiration. 18-2 256 Laboratory 18 The VertebratesExplanation / Answer
15-a.
Answer- Fishes have single circulatory system in which blood passes the heart once only during full circuit circulation in which gills and other body parts also included. Fishes do not having pulmonary circuit because pulmonary circuit present in double circulatory system (pulmonary and systemic circulations) and fishes have single circulation.
15-b.
Answer- Trachea is a windpipe, a cartilaginous structure connects the pharynx and larynx to the lungs for air passages present in air breathing animals and mammals are air breathing animals while the fishes are lived in water they require gills for taking oxygen which is dissolved in water and diffuse the CO2 out of the body.
16.
Answer- Birds and mammals are warm blooded animals they require constant energy supply for there bodily processes. Four chambered heart prevents the blood mixing it seperates the oxygenated and deoxygenated blood and maintain warm body temperature and rich supply of oxygen and energy as well.
17-a.
Answer- Importance of rib cage in respiration- During respiration there is need of more space for lung expantion and the ribcage& intercostal muscle provide sufficent space in chest cavity for the lungs. the rib cage also protects and supports the lungs.
17-b.
Answer- Importance of diaphram in respiration- During respiration there is contraction and relaxation of diaphram to enlarge the chest cavity and reduce the pressure in the lungs.
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