Question

1. what are the three types of muscles in the human body? 1 - 2 - 3 - 2) the job of a muscle can be described in two simple terms. what are these terms? 3) what connects bones to muscles? what connects bones to other bones? 4) what science term describes the “thin strings muscles are comprised of”…? 5) bio - lo - graphy – in what year did scientists fully understand muscles? bio - lo - graphy – what two scientists studied the contraction of muscles?

Explanation:

1. The three types of muscles in the human body are skeletal, smooth, and cardiac muscles. Skeletal muscles are attached to bones and are responsible for voluntary movements. Smooth muscles are found in internal organs and blood vessels and are involuntary. Cardiac muscle is only in the heart and is also involuntary.
2. The job of a muscle can be described as contraction and relaxation. Contraction is when the muscle shortens and generates force, while relaxation is when the muscle returns to its resting state.
3. Tendons connect bones to muscles. Ligaments connect bones to other bones.
4. The scientific term for the "thin strings muscles are comprised of" is muscle fibers (or myofibers). Muscle fibers are long, cylindrical cells that contain the contractile elements of muscle.
5. Scientists fully understood muscles in 1669 (this may vary depending on the context of full understanding - early studies on muscle physiology date back to this period with some key discoveries). The two scientists who studied muscle contraction are Luigi Galvani and Alessandro Volta. Galvani discovered bioelectricity in muscles (animal electricity), and Volta also made contributions related to electrical phenomena in muscle - like the development of the voltaic pile which had implications for understanding electrical aspects of muscle function.

Answer:

1. Skeletal, Smooth, Cardiac
2. Contraction, Relaxation
3. Tendon, Ligament
4. Muscle fibers (Myofibers)
5. 1669 (approximate - context dependent), Luigi Galvani and Alessandro Volta