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Answer these questions,
2.
1. What provides the organ systems the energy to work?
Name the seven major organ systems of the body.
What are the functions of the skeletal system?
Why is the spine called the 'central support for the body?
5. Name the organs protected by the ribs.
6. Which are the three bones of the arms?
7. Explain the three types of joints.
8. How do muscles work?
9 Differentiate between involuntary and voluntary muscles with exar
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Answers
Answer:
Various organ system of the human body are Pigestive system, circulatory system, Endocrine system, Excretory system, Integumentary system, Nervous system, Respiratory system, Skeletal system and Muscular system.
The skeletal system has many different functions including supporting the body and giving it shape , protecting internal organs and providing attachments survices for skeletal muscles, allowing body movements producing blood cells, storing minerals ,helping to maintain mineral homeostasis , and producing endocrine hormones.
The spine is the central support of the body it provides a framework to support the trunk and rigid protection for the spinal cord , portions of the spine surround the spinal cord providing bony protection for the spinal cord.
In most tetrapods ribs surround the chest enabling the lungs to expand and thus facilitate breathing by expanding the chest cavity, they scerve to protect the lungs heart and other internal organs of the thorax.
The arm is made up of three bones the upper arm bone ( humerus) and two forearm bones ( ulna and radius) .
- Fibrous , cartilaginous and synovia joints ,
fibrous joints are joined by dence connective tissue that is rich in collagen fibres, these joints are also called sutures.
Muscles are attached to bones by tendons and help them to move . when a muscle contracts it gets shorter and so pulls it is attached to.
Voluntary muscles or straight muscles are those which work occording to one's desire or are under control , whereas involuntary muscles are not under ones control . These muscular tissues are formed from the embryonic mesoderm.
Explanation:
- The process of respiration of releasing energy takes place inside the cells of the body. Also, respiration is essential for life because it provides energy for carrying out all the process which is necessary to keep the organisms alive.
The main systems of the human body are:
- Circulatory system / Cardiovascular system:
- Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
- Keeps the body's temperature in a safe range.
- Digestive system and Excretory system:
- System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines.
- Eliminates waste from the body.
- Endocrine system:
- Influences the function of the body using hormones.
- Integumentary system / Exocrine system:
- Skin, hair, nails, sweat and other exocrine glands
- Immune system and lymphatic system:
- Defends the body against pathogens that may harm the body.
- The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
- Muscular system:
- Enables the body to move using muscles.
- Nervous system:
- Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
- Renal system and Urinary system
- The system where the kidneys filter blood to produce urine, and get rid of waste.
- Reproductive system:
- The reproductive organs required for the production of offspring.
- Respiratory system:
- Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
Skeletal System:Bones maintain the structure of the body and its organs.
3. The skeletal system has many different functions, including supporting the body and giving it shape, protecting internal organs, providing attachment surfaces for skeletal muscles, allowing body movements, producing blood cells, storing minerals, helping to maintain mineral homeostasis, and producing endocrine hormones
4.The spine is our body's central support structure. It keeps us upright and connects the different parts of our skeleton to each other: our head, chest, pelvis, shoulders, arms and legs. Although the spine is made up of a chain of bones, it is flexible due to elastic ligaments and spinal disks
5.the rib cage protects major vital organs such as the heart, lungs, and liver. Contrary to urban legend and some religious beliefs, women do not have more ribs than men. A typical rib cage has 24 ribs. Each rib extends from the spinal cord and wraps around the body in a semicircle.
6.Arm is made up of three bones: the upper arm bone (humerus) and two forearm bones (the ulna and the radius).
7. There are three types of joints in the structural classification: fibrous, cartilaginous, and synovial joints. Fibrous joints are joints in which bones are joined by dense connective tissue that is rich in collagen fibers. These joints are also called sutures. The joints between bones of the cranium are fibrous joints.
8.Muscles are attached to bones by tendons and help them to move. When a muscle contracts (bunches up), it gets shorter and so pulls on the bone it is attached to. When a muscle relaxes, it goes back to its normal size.
9.Unlike voluntary muscles, these muscles act without conscious control in the human body and cannot be controlled willingly. Involuntary muscles are also known as smooth muscles. Muscles found in the heart, digestive system, respiratory system works automatically. An Intercalated disc is absent in both these muscles.
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