Answer:
THERE IS PULMONARY AND SYSTEMIC CIRCULATION.
<u>PULMONARY CIRCULATION</u>- THE FLOW OF BLOOD FROM THE HEART TO THE LUNGS THEN BACK TO THE HEART
<u>SYSTEMIC CIRCULATION</u>-FROM THE HEART TO THE REST OF THE BODY THEN BACK TO THE HEART.
THEIR DIFFERENCES ARE;
-DIRECTION OF BLOOD FLOW
-QUALITY OF BLOOD,OXYGENATED AND DEOXYGENATED
-PRESSURE; PULMONARY= LOW
SYSTEMIC=HIGH
Answer: A specific chemical binding to nociceptors
Explanation:
