There are about 500 million alveoli in the adult lung. T or F Sound in produced
ID: 181316 • Letter: T
Question
There are about 500 million alveoli in the adult lung. T or F Sound in produced by air being expelled from the lungs and passed over the larynx. T or F External respiration involves the use of oxygen to release energy stored in nutrient molecules such as glucose. T or F Adults normally develop 32 teeth. T or F The sensation of taste is coupled with the sense of touch. T or F A normal adult usually requires between 1, 600 and 3,000 calories a day, depending on age, sex, body weight, and degree of physical activity. T or F The human body stores reserves of energy as fat in fat cells. T or F Essential amino acids are produced by the body as needed. T or F Nuts and seeds are good sources of protein. T or F Male sex chromosomes determine gender of the child. T or F Pituitary hormones play a significant role in the reproductive process T or F All of the inherited traits possessed by offspring are established at the time of fertilization. T or FExplanation / Answer
1. True. Alveoli are tiny, microscopic sac like structures in the lungs where gaseous exchange takes place. These tiny structures constitute a surface area of almost 60-70 m2 of surface area, huge enough for efficient gaseous exchange.
2. True. Larynx is call the voice box of animals. It contains two vocal chords, through which, when air from lungs passes, produces sound.
3. False. External respiration is the intake and leave air, to and from lungs, respectively, to enable gaseous exchange to and from blood.
4. True. A child has 20 primary teeth, all of which fall and replaced by 28 secondary teeth. Around the age of 25, four teeth (=wisdom teeth) develop, which counts the total number of teeth to 32.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.