Answer:
TRUE
Explanation:
In the heart there are two semilunar valves (29, 32), both valves lead to the pulmonar artery, and to the aortic arch; respectively.
Anatomical and physiological barriers provide the crucial first line of defense against pathogens. These barriers include intact skin, vigorous mucociliary clearance mechanisms, low stomach pH and bacteriolytic lysozyme in tears, saliva and other secretions.
Answer: yes
Explanation: because your genetics