Answer:
Veins
Explanation:
Blood returning to the heart from the pulmonary circuit first enters the veins.
The aorta is the anser c:
There are 3 types of muscle tissue:
Skeletal muscle tissue,
Cardiac muscle tissue, and
Smooth muscle tissue.
Witch one do you want to know?
Answer:
b
Explanation:
The ends of the lipid are attached to each other
Oxytocin causes contractions during pregnancy, it also is the reason why mothers feel "motherly" towards their children after childbirth as there are high levels on oxytocin in the mother's blood.