Recent content by Ppokpok

1. Which of these parts receive nerve impulses from the central nervous system, causing muscle fibers to contract? A. Interneurons B. Motor neurons C. Sensory neurons D. Myelin sheaths Thank you..

1. Which of these parts receive nerve impulses from the central nervous system, causing muscle fibers to contract? A. Interneurons B. Motor neurons C. Sensory neurons D. Myelin sheaths Thanks dudes. ^_^

1. Which of these parts receive nerve impulses from the central nervous system, causing muscle fibers to contract? A. Interneurons B. Motor neurons C. Sensory neurons D. Myelin sheaths Thank you.

1. What part of the lower respiratory tract is made up of tiny air sacs where oxygen and carbon dioxide are exchanged? A. Bronchioles B. Alveoli C. Trachea D. Larynx 2. All the systems of the body work together to keep the internal environment of the body constant within certain limits. This...