Why does inspiration effectively work to return blood to the heart?   A. Inspiration lowers the pressure within the thoracic cavity. B. Inspiration raises the pressure within the thoracic cavity. C. Inspiration lowers the pressur within the vascular system of the legs. D. Inspiration raises the pressure within the vascular system of the legs.

The two openings in the nostrils at the base of the nose are known as  A. Wings B. Arch of the wing C. Columna nasi D. Anterior nares

Answer the question below. Is the answer given descriptive enough??

A Describe why veins and arteries are reversed in the pulmonary system B Complete the table below C Using the image below – describe and annotate the size, chamber wall thickness and orientation of each of the 4 chambers

Which of the following statements about intrapulmonary and intrapleural pressure is TRUE?A. The intrapulmonary pressure is always subatmospheric.B. The intrapleural pressure is always greater than the intrapulmonary pressure.C. The intrapulmonary pressure is greater than the intrapleural pressureD. The intrapleural pressure equals the atmospheric pressure.

Which is true in a patient with increased airways resistance?  1. Breathing is no more difficult than normal 2. It is equally hard to breathe both in and out 3. It is harder to breathe in (inspire) 4. It is harder to breathe out (expire)