What Are The Muscles That Influence The Human Skeleton
Lesson 36 Assignments
Biology
Muscles and the Skeleton
Provide Action and Support Every movement you make or every step you take is controlled by the systems of muscles and skeleton that moves and supports the body. The human boy is a complex and elegant mechanism influenced my many factors. Both muscles and the skeleton are not only good for movement, they also influence crucial functions inside the body and the skeleton provides support in maintaining the body’s shape and it protects internal organs.
There are three different kinds of muscles all with different purposes, functions and locations in the body. They are skeletal muscle, cardiac muscle and smooth muscle. Skeletal muscle is named this because it is attached to and moves the skeleton. It is under the direct and normally voluntary or conscious control of the nervous system. Sometimes skeletal muscles are also called or known as striated (meaning ‘striped) muscle because when viewed under a microscope they are striped. Cardiac muscle is only found in the heart and is the specialized muscle of the heart. It is spontaneously active and involuntary, which means it initiates …show more content…
This allows the skeleton to alter its shape and composition in response to the demands placed on it. Bones that carry heavy loads or are subjected to extra stress become thicker, providing more strength and support. A professional tennis player for instance may have 30% more bone mass on his or her playing arm. Actually normal stress is an important factor in maintaining bone strength. Bones of a body part that is immobilized in a cast rapidly lose a great amount of calcium. Also people that have to use wheelchairs or lay in bed all the time initially lose about 2% of bone mass per month. Bed rest as well as space flight also reduces normal stress on the bones, causing bone
Biology
Muscles and the Skeleton
Provide Action and Support Every movement you make or every step you take is controlled by the systems of muscles and skeleton that moves and supports the body. The human boy is a complex and elegant mechanism influenced my many factors. Both muscles and the skeleton are not only good for movement, they also influence crucial functions inside the body and the skeleton provides support in maintaining the body’s shape and it protects internal organs.
There are three different kinds of muscles all with different purposes, functions and locations in the body. They are skeletal muscle, cardiac muscle and smooth muscle. Skeletal muscle is named this because it is attached to and moves the skeleton. It is under the direct and normally voluntary or conscious control of the nervous system. Sometimes skeletal muscles are also called or known as striated (meaning ‘striped) muscle because when viewed under a microscope they are striped. Cardiac muscle is only found in the heart and is the specialized muscle of the heart. It is spontaneously active and involuntary, which means it initiates …show more content…
This allows the skeleton to alter its shape and composition in response to the demands placed on it. Bones that carry heavy loads or are subjected to extra stress become thicker, providing more strength and support. A professional tennis player for instance may have 30% more bone mass on his or her playing arm. Actually normal stress is an important factor in maintaining bone strength. Bones of a body part that is immobilized in a cast rapidly lose a great amount of calcium. Also people that have to use wheelchairs or lay in bed all the time initially lose about 2% of bone mass per month. Bed rest as well as space flight also reduces normal stress on the bones, causing bone