The important functions of the muscular system in the human body are described as follows:
1. MovementsSkeletal muscles help in the voluntary movements of each and every human body part. Active contraction of these muscles occurs at the expense of energy, which creates a force that moves the body parts.
2. Posture and stabilityHuman skeleton is composed of bones and the joints that are formed between them. Skeletal muscles play a major role in stabilizing human skeleton. They also help in maintaining proper posture of human body.
3. Heat productionAs already stated, active contraction of muscles requires energy. Hence, muscles use a great amount of body's total energy. Due to this the body's metabolic rate is increased, producing a large amount of heat in the body.
4. CirculationCardiac muscles are responsible for forcing the blood out of the heart and pumping it throughout the human body.
Smooth muscles make up the majority of the internal organs with the exception of the heart which is made up of cardiac muscles.
Smooth muscles are the most common type of muscle tissue found in the internal organs
your rib cage or bones
smooth muscle
Smoothe Muscle
Smooth muscles, also called unstriated
Smooth Muscle
To protect you'r internal organs
Your bones protect your internal organs from injury.
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To protect our internal organs from germs.
Internal organs such as the lungs and heart.
The skull protects the brain.
carbonhydrates
The ribs support and protect the lungs, and to some extent protect other internal organs.
The function of a shell is to protect an organism's internal organs.
Obviously to protect the internal body organs and to sense things.
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Humans have many bones that don't protect internal organs like your finger bones (which are called phalanges and metacarpals)