Biology, 26.10.2021 09:50 brenda9495
Robert decides to go for a run when he gets home from school. As he begins running, his breathing rate starts to increase. What are the mechanisms that cause his breathing rate to increase?
A. When carbon dioxide levels in the blood decrease, the respiratory center sends signals to the alveoli to increase the volume that they expand.
B. When oxygen levels in the blood decrease, the respiratory center sends signals to the diaphragm to increase the rate at which it contracts and relaxes.
C. The respiratory control center senses the need for more oxygen, which causes the trachea to push and pull air more forcefully.
D. The diaphragm senses the need for more oxygen, which causes it to expand and contract more quickly in order to inflate and deflate the lungs.
Answers: 2
Biology, 22.06.2019 04:10
What noticeable trend from this graph might be used to make a conclusion?
Answers: 1
Biology, 22.06.2019 10:30
Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.
Answers: 2
Biology, 22.06.2019 19:30
Which of the following would most directly interfere with sperm production? ingestion of a substance that mimicked inhibin interruption of sustentocytes' production of abp low sperm count use of synthetic steroids (testosterone)
Answers: 2
Robert decides to go for a run when he gets home from school. As he begins running, his breathing ra...
Biology, 15.07.2019 06:00
Health, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
Biology, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
English, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00
Mathematics, 15.07.2019 06:00