Functions Of Organs In The Human Body – Abdominal wall Peritoneum Wound Bone Liver Small intestine Large intestine Kidneys and ureters Veins, vessels and lymphatics of the abdomen.
Pelvic floor and perineum The female pelvis and reproductive organs
Functions Of Organs In The Human Body
General Skull Face and scalp Infratemporal region and pterygopalatine fossa Orbit and contents Nose Ear Oral cavity Tooth Tooth Neck Neck
Human Liver Anatomy And Function
Overview Cerebrum Diencephalon Cerebellum Brainstem Menings, ventricular system and subarachnoid space Blood supply to the brain Spinal cord Nervous system pathways Cranial fluid
Cardiovascular system Nervous system The body’s muscular system.
The Human Body is a biological machine made up of a physical system; groups of organisms that work together to produce and maintain life. Sometimes we get lost while learning about cells and molecules and can’t see the forest for the trees. It may be useful to step back and look at the big anatomical picture.
This main page will give you a quick introduction to the systems of the human body, so that each organ you learn later will add basic structure to the basic concept you receive here.
Human Body Systems: Overview, Anatomy, Functions
Hormone production regulates many different bodily functions (eg, menstruation, blood sugar levels, etc.)
The skeletal system is made up of bones and cartilage. There are two parts to the skeleton; axial and appendicular. The axial skeleton consists of the bones of the head and trunk. The appendicular skeleton consists of the bones in the limbs, as well as supporting the thoracic and pelvic joints.
There are 206 bones in the adult human body. The place where two bones join is called a joint or joint. Joints are supported by cartilage and strengthened by ligaments. The functions of the skeletal system are mechanical support, movement, protection, blood cell production, calcium storage and endocrine regulation.
The parts of the skeletal system are adapted to the function of the body part they support. Thus, the anatomy of bones, joints and ligaments is studied topographically, as the bones of; head and neck, chest, abdomen, upper arms and legs.
Functions Of Respiratory System
The muscular system consists of all the muscles of the body. There are three types of muscles; smooth, cardiac and skeletal muscle. Smooth muscle is found in the walls of blood vessels and hollow organs such as the stomach or intestines. Cardiac muscle cells form the heart muscle, which is also called the false heart. Skeletal muscles attach to the bones of the body. Of these three, only the skeletal muscles can be consciously controlled and enable us to produce body movements, while the activity of the other two types of muscles is controlled by the voluntary nervous system’ and it knows nothing.
Histologically, skeletal and cardiac muscle fibers are arranged in a repetitive pattern to give the appearance of stripes, therefore they are called striated muscle.
Learn all about the musculoskeletal system in the study unit below, or consolidate what you’ve already learned with our fully-choice quizzes.
The cardiovascular system is made up of the heart and the circulatory system. The heart is made up of four chambers; two atria and two ventricles. Blood enters the heart through the upper chambers of the left and right atria and exits through the left and right ventricles. The heart valves prevent the backflow of blood.
Digestive System Anatomy And Physiology
The heart works like a two-way pump. The right side of the heart pumps deoxygenated blood through the pulmonary circulation to the lungs, where the blood is reoxygenated. When the left side of the heart simultaneously pumps oxygenated blood into the circulatory system, it distributes it to the peripheral organs. The regular pumping, or heartbeat, is controlled by the cardiovascular system.
The circulatory system, also called the vascular system, consists of arteries, veins and capillaries. They all have a continuous network of blood vessels that transport blood around the body. Blood leaves the heart through arteries, and they continue to decrease in size as smaller arteries called arterioles. Arterioles end in a network of even smaller vessels called capillaries. The exchange of gases and nutrients takes place through the capillary walls.
Small veins, called venules, leave the capillaries and gradually increase their lumen on the way to the heart to end up as veins. There are some histological differences between arteries and veins, but the main difference in their function reflects the way blood transports blood: arteries transport blood from the heart to the periphery, while arteries transport blood from the periphery to the heart.
The main arteries in the circulatory system are the aorta and its branches, while the main representatives of the veins are the superior vena cava and the inferior vena cava.
Basic Organs Of The Human Body
The main functions of the cardiovascular system include transporting oxygen, nutrients and hormones throughout the body in the blood, as well as eliminating carbon dioxide and other metabolic waste products.
The respiratory system consists of a series of organs; nasal bone, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli). The nasal cavity and pharynx together are called the upper respiratory system, while the rest of the organs comprise the lower respiratory system.
The organs of the respiratory system, apart from the alveoli, work to move air into the lungs with the help of the respiratory muscles (especially the diaphragm and intercostal muscles).
Once the air is in the lungs it enters the alveoli (space for gas exchange) and interacts with the blood carried by the pulmonary circulation. Here, carbon dioxide is removed, and oxygen is returned to the blood. So the main function of the respiratory system is to bring oxygen to the body and remove carbon dioxide.
Human Body Organs Activity & Answer Key 5th Grade Life Science
The nervous system controls the way we interact and respond to our environment, by controlling the function of organs in other systems of our body. The organs of the nervous system are the brain, the spinal cord and the sensory organs. These are connected by neurons, which function to transmit nerve signals around the body.
According to the structure of the body and according to the climate, the nervous system is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). When it works, the nervous system is considered to be two parts; somatic (SNS) or voluntary nervous system, and autonomic (ANS) or autonomous nervous system.
The definition of the central nervous system is that it receives information from the body’s environment and produces instructions, thus controlling all the functions of the human body. This two-way information enters and exits the CNS and is transmitted by the nervous system.
The CNS consists of the brain and spinal cord. The brain is housed in the neurocranium, and is formed from the brainstem, cerebellum and brainstem (pons and medulla oblongata). The central parts of the CNS are occupied by areas called ventricles that are filled with cerebrospinal fluid (CSF). The spine is inserted into the spine. The spinal cord extends into the middle part of the spine. It is also filled with CSF and communicates with the ventricles of the brain.
Organs And Structures Of The Respiratory System
The CNS is made up of neurons and their processes (axons). Gray matter is composed of neuron cell bodies, located in the cerebral cortex and the central part of the spinal cord. White matter is made up of axons, which connect and build nerve pathways. Gray matter is where impulses originate, while white matter is where impulses travel to organs.
The definition of the nervous system is that it carries information from the CNS to target cells, and from target cells to the CNS. It has its own nerves and ganglia. Nerves that carry information from the sensory organs (eg, eye, tongue, nasal mucosa, ear, skin) to the CNS are called ascending, afferent, or sensory nerves. The cables that carry information from the CNS to the periphery (muscles and glands) are descending, efferent, electrical, or secretory cables.
A ganglion is a group of nerve cells outside the CNS, made up of nerve cells. Ganglia can be sensory and autonomic. Sensory ganglia are associated with spinal nerves and other cranial nerves (V, VII, IX, X).
Peripheral nerves originate from the CNS. There are 12 pairs of sensory nerves that originate in the brain, and 31 pairs of spinal nerves that originate in the spine. Cranial nerves are named I to XII, determined by their place of exit from the skull (front to back). Spinal nerves are divided into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal nerves, depending on the vertebral position from which they arise. In other parts of the body, nerves connect to each other, forming networks called plexuses. Notable plexuses are:
Human Organs And Organ Systems ( Functions, Major Organs, And Interactions)
The sensory nervous system (SNS) and the autonomic nervous system (ANS) are divisions of the nervous system, with information transmitted through the sensory and spinal nerves.
The definition of the somatic nervous system is that it allows voluntary control over our movements and responses. Transmits sensory and electrical information between the skin, sensory organs, skeletal muscles, and CNS; to establish communication between the human body and its environment and response to external stimuli. Major somatic peripheral nerves include the median nerve, sciatic nerve, and femoral nerve.
The definition of the autonomic nervous system is that it controls all the internal organs except the senses, through the interrelated.
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