Nervous system

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    Myotomes

    ByDr.Arati Gameti

    Myotomes are groups of muscles supplied by the motor fibers of a single spinal nerve root. A single neuron’s sensory fibers innervate a dermatome, which is a section of skin. Myocommata (plural: myocommata) is what separates myotomes. The part of a somite that turns into muscle during vertebrate development is called the myotome. Introduction Myotomes are spinal nerve roots that innervate a set of muscles (Greek: myo = muscle, tome = component, volume). When nerve radiculopathy is suspected, myotome testing is an important part of the neurological assessment. Since all skeletal muscles are innervated by nerves from several spinal cord levels, myotomes are even more difficult to evaluate than dermatomes. The somatic nervous system is composed of myotomes and is a component…

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    Nerve Tissue Composition

    ByNitesh Dhameliya

    Nerve tissue is a fundamental component of the nervous system, responsible for transmitting signals throughout the body. Comprising of specialized cells called neurons, nerve tissue is characterized by its unique structure and function. What is a Nerve Tissue Composition? Within the neurological system, neurons are cells that send messages to other neurons, muscles, or gland…

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    Dermatomes

    ByYash Lakhnotra

    Overview The term “dermatome” is a combination of two Greek words: “derma” meaning “skin” & “tome” meaning “cutting” or “thin segment”. Dermatomes are areas of the skin whose sensory distribution is innervated by afferent nerve fibers from the dorsal root of a single spinal nerve root, which is the portion of a peripheral nerve that…

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    Central nervous system (CNS)

    ByNitesh Dhameliya

    What is a Central Nervous System? The central nervous system and the peripheral nervous system are two subtypes of the nervous system. The central nervous system is the brain and spinal cord, while the peripheral nervous system includes everything else. The central nervous system’s responsibilities involve receiving, processing, and responding to sensory information. Responses, sensations,…

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    Immune System

    ByAkshit Virani

    Definition The Immune System is the body’s mechanism for preventing or inhibiting infection. It can protect the body against bacteria, viruses, parasites, and more because of its intricate network of cells, organs, proteins, and tissues. A working immune system can provide the difference between healthy tissue and foreign molecules. If an undesirable material, it will…

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    Ventricles Of The Brain

    ByAkshit Virani

    Overview The Ventricles of the Brain are a connecting network of cavities inside the brain parenchyma that are filled with cerebrospinal fluid (CSF). The ventricular system is made up of two lateral ventricles, a third ventricle, the cerebral aqueduct, and a fourth ventricle (as shown in the figures below). The choroid plexuses in the ventricles…

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    The Spinal Cord

    ByDr.Krupa Soni

    What does the spinal cord do? What differentiates the spinal cord from the vertebral column? What function does the spinal cord have? What constitutes the spinal cord’s primary components? Three major sections make up the spinal cord: What organs and substances give rise to the spinal cord? Like the brain, the spinal cord is covered…

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    Pudendal Nerve

    ByDr.Tina Patel

    Introduction The Pudendal Nerve is a major nerve responsible for controlling and innervating the genital and anal regions. It originates from the sacral plexus and travels through the pelvis, supplying various muscles and sensory regions in the perineal area. The word “Pudendal” is derived from the Latin word pudenda, which means “external genitals” and is…

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    Peripheral Nervous System

    ByDr.Krupa Soni

    What is the Peripheral Nervous System? The Peripheral Nervous System (PNS) is a vital component of the human nervous system, working in conjunction with the Central Nervous System (CNS) to facilitate communication between the body and the brain. It consists of an intricate network of nerves and ganglia that extend throughout the body, connecting various…

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    Upper limb Dermatoms

    ByVandita Solanki

    Definition Upper limb dermatomes are specific regions of skin that are innervated by the sensory branches of nerves originating from the spinal cord. These dermatomes correspond to different spinal nerve levels and play a crucial role in conveying sensory information from various parts of the upper limb, such as the fingers, hands, and arms, to…