3 joint association of circulatory system​

Explanation:

3 joint association system circulatory system are platelets, pulmonary, systemic system because males & females have a 4 chambered heart system

malnutrition stems from 3rd world countries that can not produce sustainable foods such as corn, beans, rice, which all require rain & moisture. In africa, rain is scarce. In turn, crops dont grow or thrive under these conditions.

The heart is located in the upper pulmonary system between the lungs where it can gather the necessary O2 to continue life of patient. in turn, the associated cells can transport O2 throughout all the cells in the body of all mammals.

weight of the heart in male; is 289.6

weight for females is 285.1.

reason being size difference in the 2 sexes...