Read about different wiring options, complete with pictorials and schematics. Whether you are looking for answers to 3-way and 4-way switches, dryer plugs, power at switch, power at outlet, or how to wire all these switches, the switch & outlet section will make it all clear. Five Ways to Artfully Use Home Lighting.
How Many Joints in The Human Body. There are 360 joints in the human body. There are 86 skull joints, six throat joints, 66 thorax joints and 76 in your spine and pelvis. Also there are 32 in each upper limb and 31 in each lower limb. Two bones in our body meet to form a joint. Joints make our body flexible and to make movements.
Three types of muscles. The muscular system can be broken down into three types of muscles: skeletal, smooth and cardiac, according to the NIH. Skeletal muscles are the only voluntary muscle tissue in the human body and control every action that a person consciously performs. Most skeletal muscles are attached to two bones across a joint, so the muscle serves to move parts of those bones closer to each other, according to The Merck Manual.