Question

e) Give the technical terms of the following : A doubled walled sacthat encloses the human heart. 86 ii) Protein substances present on the surface of RBC. 85 ii) The circulation from heart to lungs and back to heart. 89 iv) The valve present between left auricle and left ventricle.​

Answer 1

Answer:

iv

Explanation:

please mark me as brainlust