Correct answer: A) Extension
Extension is a physical position that occurs when angle between the bones and the limbs of joint increases.
It takes place when there is a contraction of muscles and bones move the joint from a bent to a straight position, it is opposite of flexion, in which the angle between the bones and the limb at the joint decreases.
Example: During straightening of the leg, the angle between the tibia and femur increases, which shows extension has taken place.
Answer:
A cell that makes steroid hormones
Explanation:
A cell that makes steroid hormones have the greatest concentration of smooth endoplasmic reticulum. It is named so because it is not studded with ribosomes on its surface unlike rough endoplasmic reticulum. It has smooth appearance. Its main function are synthesizing lipids, carbohydrates, steroid hormone and detoxification.
Pigs I believe because we take organs from them to perform transplants
