Which of the following is not part of the intrinsic conduction system of the hearnt? a) atrioventricular (av) node b) bundle branches c) atrioventricular (av) valve d) sinoatrial (sa) node

c genetic engineering

answer: all : )

explanation:

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.