Answer:
b. False
Explanation:
The umbilical vein carries oxygen rich blood from the placenta to the fetus. The umbilical artery carries deoxygenated blood from the fetus to the placenta.
Answer:
C
Explanation:
Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs. Excretion is another way of saying elimination.
Explanation:
i mma eat this points now
lol
thank youu too...
Answer: Ok Diastole commences with the closure of the aortic and pulmonary valves. Intraventricular pressure falls but there is very little increase in ventricular volume (isovolumetric relaxation). Once ventricular pressure falls below atrial pressure, the mitral and tricuspid valves open and ventricular filling begins.The first heart sound (S1) is produced by vibrations generated by closure of the mitral (M1) and tricuspid valves (T1). It corresponds to the end of diastole and beginning of ventricular systole and precedes the upstroke of carotid pulsation.
Hope this helps have a awesome day/night❤️✨
Explanation:
Answer:
The answer is - Tetany
Explanation:
Tetany is a sustained contraction which can either be fused (one smooth sustained contraction plateau) or unfused (incomplete due to wavering contraction). Tetany occurs when the muscle contracts uncontrollably and can also be as a result of electrolyte imbalance such as low calcium, magnesium deficiency, low potassium. When the sarcomeres are stimulated so quickly causing a sustained contraction it is called tetany.
