Answer:
The correct answer is option D. all of the above are correct.
Explanation:
During muscle contraction, only one bone move and others remain stationary. The point or site where tendons are attached to the bone is known as origin and insertion. Insertion is the point where the muscle attached to the movable bone. Origin is the site or point where muscle binds to the immovable bones.
When muscle contracts the insertion moves towards the origin. For the example radius and ulna are movable bones and point where the muscle attaches to them are insertion and humerus and scapular are the bones that do not move and point where the muscle attaches to it is the origin.
Thus, the correct answer is option D. all of the above are correct.
Answer:
Water moves across a permeable barrier during osmosis to equalize the solute concentration on each side of the membrane. Nutrients, on the other hand, are absorbed across a barrier by a process known as diffusion
Explanation:
Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane. Diffusion is the process by which atoms or molecules move from an area of high concentration to low concentration
In the nervous system, electrical impulses carry messages to different organs of the body. The endocrine system uses hormones, chemical signals, to carry commands to the destined organs and cells
