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…
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,…
Overview Your lymphatic system is a network of organs, veins, and tissues that protect you from infection and maintain a healthy fluid balance throughout your body. Your bone marrow, thymus, and lymph nodes are all lymphatic system organs. Swollen lymph nodes are a symptom of both common infections, such as strep throat, and more serious…
Introduction Cellular organelles are specialized structures within eukaryotic cells that perform various essential functions to maintain the cell’s integrity and carry out specific tasks. These microscopic compartments act like miniature factories, each with a unique role in the overall functioning of the cell. Organelles are enclosed by membranes, similar to the cell’s outer plasma membrane,…
What is a Muscles Of Eye? The human eye is a complex organ responsible for vision, consisting of various muscles that facilitate its movement and function. These muscles play a crucial role in controlling the movement of the eye, allowing us to focus on objects, perceive depth and distance, and track moving targets. The six…
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…
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…
What is an Antidiuretic Hormone (ADH)? Antidiuretic hormone (ADH), also known as vasopressin, is a peptide hormone produced by the hypothalamus and released from the posterior pituitary gland. Its primary function is to regulate the body’s retention of water, helping to maintain the body’s water balance and prevent dehydration. Introduction: The goal of ADH-level testing ADH…
What is Cervical Lateral Flexion? The cervical spine consists of seven vertebrae, and each vertebra is separated by intervertebral discs that allow flexibility and movement. Lateral flexion is one of the primary movements of the cervical spine, along with other movements such as flexion (bending forward), extension (bending back), and rotation (turning the head from…
What is Cervical Flexion And Extension? Cervical flexion and extension refer to the movements of the neck, specifically the forward and backward bending of the cervical spine (cervical vertebrae). Here’s a breakdown of each move: Cervical Flexion What is Cervical Flexion? Cervical flexion refers to the forward flexion or flexion movement of the neck. This…
