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The musculoskeletal system is made up of bones, muscles and skin, which interact to allow movement. Bones are hard and tough, but joints allow them to move. The hypodermis connects the dermis layer of the skin to the muscles and bones, allowing the skin to move smoothly over the tissues and muscles underneath it. The nervous system also allows interactions between bone, muscle and skin. For example, when nerves in the skin of the fingers sense a hot object, the muscles of the arm contract and the arm moves away from the heat.
| Characteristics | Values |
|---|---|
| Muscles move skin | When nerves in the skin of fingers contact a hot object, the muscles of the arm contract and the arm is moved away from the heat |
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What You'll Learn
- The nervous system allows interactions between bone, muscle, and skin
- Joints are where two bones meet and allow movement
- The hypodermis connects the dermis layer to muscles and bones
- The heart muscle is composed of cardiac muscle cells and moves blood around the body
- Bones are hard and tough, but joints allow them to move
The nervous system allows interactions between bone, muscle, and skin
The hypodermis connects the dermis layer to the muscles and bones. It also allows the skin to move smoothly over the tissues and muscles underneath it. Without the hypodermis, the skin would rub against the tissues and muscles.
The heart muscle is composed of a different type of muscle cell (cardiac muscle cells) and beats to move blood throughout the body. Bones are hard, tough structures that resist movement individually, but joints form new structures that can move. By joining, or articulating, all the bones of the body, a skeleton of defined shape that is capable of movement is formed.
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![Applied Anatomy and Kinesiology, the Mechanism of Muscular Movement. ... 2D Ed., Thoroughly Rev., Illustrated with L97 Engravings. 1919 [Leather Bound]](https://m.media-amazon.com/images/I/617DLHXyzlL._AC_UY218_.jpg)
Joints are where two bones meet and allow movement
The nervous system allows interactions between bone, muscle and skin. For example, when nerves in the skin of your fingers touch a hot object, the muscles in your arm contract and your arm moves away from the heat.
Because bones are hard and tough structures that resist movement individually, joints form new structures that can move. By joining all the bones of the body, a skeleton of a defined shape is formed that is capable of movement.
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The hypodermis connects the dermis layer to muscles and bones
The hypodermis also acts as a shock absorber, protecting the organs, muscles and bones from harm. It insulates the body, protecting it from the cold.
The hypodermis is also responsible for producing fat cells (adipocytes), which store energy. Adipose tissue is a fatty tissue that consists mostly of adipocytes.
The hypodermis is an essential part of the body's musculoskeletal system, which allows for coordinated growth and metabolic activities in bone, muscle and skin. The nervous system also allows for interactions between these three systems. For example, when nerves in the skin of the fingers come into contact with a hot object, the muscles of the arm contract and the arm is moved away from the heat.
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The heart muscle is composed of cardiac muscle cells and moves blood around the body
The heart muscle is composed of cardiac muscle cells, also known as myocardium, and moves blood around the body. Cardiac muscle is one of three types of muscle in the body, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart. The heart muscle is made up of individual cardiac muscle cells joined by intercalated discs, and encased by collagen fibres and other substances that form the extracellular matrix.
The cardiac muscle forms a thick middle layer between the outer layer of the heart wall (the pericardium) and the inner layer (the endocardium). The heart is made up of three layers: the pericardium, myocardium, and endocardium. The endocardium is not cardiac muscle and is comprised of simple squamous epithelial cells and forms the inner lining of the heart chambers and valves. The pericardium is a fibrous sac surrounding the heart, consisting of the epicardium, pericardial space, parietal pericardium, and fibrous pericardium.
The primary function of cardiomyocytes is to contract, which generates the pressure needed to pump blood through the circulatory system. The amount of blood pumped by the heart per minute (the cardiac output) varies to meet the metabolic needs of peripheral tissues, particularly the skeletal muscles, kidneys, brain, skin, liver, heart, and gastrointestinal tract. The cardiac output is determined by the contractile force developed by the cardiac muscle cells, as well as by the frequency at which they are activated (rhythmicity).
The nervous system allows interactions between bone, muscle, and skin. For example, when nerves in the skin of fingers contact a hot object, the muscles of the arm quickly contract, and the arm is moved away from the heat.
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Bones are hard and tough, but joints allow them to move
The hypodermis connects the dermis layer to the muscles and bones. It allows the skin to move smoothly over the tissues and muscles underneath it. Without the hypodermis, the skin would rub against the tissues and muscles.
The nervous system also allows interactions between bone, muscle, and skin. For example, when nerves in the skin of fingers contact a hot object, the muscles of the arm quickly contract, and the arm is moved away from the heat.
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Frequently asked questions
The hypodermis is the layer of your body that connects your dermis layer to your muscles and bones.
The hypodermis insulates your body to protect you from the cold, and allows your skin to move smoothly over the tissues and muscles underneath it. It also acts as a shock absorber to protect your organs, muscles and bones from harm.
Without the hypodermis, your skin would rub against the tissues and muscles underneath it.
The hypodermis produces fat cells (adipocytes), which store energy.
Adipose tissue is a fatty tissue that consists mostly of adipocytes.
