The armpit, also known as the axilla, is the hollow area located beneath the shoulder joint where the upper arm connects to the torso. It is a complex region containing lymph nodes, blood vessels, nerves, and sweat glands. The armpit plays a role in regulating body temperature through sweat production and acts as a passage for lymphatic drainage. It is also a site where body odor can develop due to the presence of apocrine sweat glands. The armpit is an important anatomical area that serves both functional and physiological purposes in the human body.

What is an "armpit"?

armpit

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The hip is a major joint in the human body that connects the thigh bone (femur) to the pelvis. It forms the articulation point between the lower body and the upper body, providing stability, support, and range of motion. The hip is located on the side of the body and is responsible for bearing weight, facilitating walking and movement, and maintaining balance. It consists of a ball-and-socket joint that allows for various motions, including flexion, extension, abduction, adduction, and rotation. The hip is crucial for overall mobility and is surrounded by muscles, tendons, and ligaments that provide strength and control during physical activities.

What is "hip"?

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The temple is the flattened area on the side of the head, just above the cheekbone and in front of the ear. It is located on both sides of the face and is often characterized by a slight indentation or hollow. The temple region is composed of various tissues, including skin, muscle, and bone. It serves as an important anatomical landmark and is also known for its sensitivity, as it is closer to the surface of the skull and houses some major blood vessels. The temples are involved in facial expressions, such as squinting or raising the eyebrows, and are often associated with tension or pressure sensations, particularly during headaches or sinus-related discomfort.

What is "temple"?

temple

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The thumb is the first digit of the hand, located on the side opposite the fingers. It is characterized by its ability to oppose the other fingers, allowing for precision gripping and manipulation. The thumb plays a crucial role in fine motor skills, such as writing, picking up small objects, and performing intricate tasks. It provides stability and strength to the hand, enabling a wide range of movements and dexterity. The thumb's unique structure and mobility are essential for everyday activities and tool usage. Understanding the anatomy and function of the thumb is important for hand coordination, grip strength, and overall hand functionality.

What is "thumb"?

thumb

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The toenail, also known as the ungual or nail plate, is a hard, keratinized structure that covers and protects the tip of the toe. It grows from the nail bed and serves multiple functions, including providing structural support to the toe, enhancing grip and dexterity, and offering some degree of protection to the underlying tissues. Proper toenail care is essential to prevent issues such as ingrown nails or infections and maintain overall foot health. Understanding the anatomy and function of the toenail is crucial for maintaining proper hygiene, identifying abnormalities, and promoting optimal nail health.

What is "toenail"?

toenail

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The fingernail is a hard, translucent plate made of keratin that covers and protects the tip of the finger. It grows from the nail matrix located at the base of the nail and serves multiple purposes, including providing support to the fingertip, enhancing tactile sensitivity, and assisting in tasks that require precision and manipulation. Fingernails require proper care and maintenance to prevent issues such as breakage, infections, or nail disorders. Understanding the anatomy and function of the fingernail is important for maintaining healthy nails, promoting hygiene, and protecting the underlying tissues.

What is "fingernail"?

fingernail

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A joint is a structure in the body where two or more bones come together. It allows for movement and flexibility, enabling the body to perform various activities. Joints are crucial for mobility and range of motion in different parts of the body, such as the limbs, spine, and fingers. They are supported by ligaments, which provide stability and hold the bones together. Joints can be classified into different types, including hinge joints, ball-and-socket joints, and pivot joints, each with its own unique structure and movement capabilities.

What is a "joint"?

joint

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The rib refers to a part of the body that forms part of the bony framework of the chest, known as the ribcage or thoracic cage. Humans have 12 pairs of ribs that attach to the spine at the back and curve around to the front, connecting to the sternum (breastbone) or other ribs via cartilage. Ribs provide protection to vital organs within the chest cavity, such as the heart and lungs. They also play a role in facilitating breathing by expanding and contracting with the movement of the diaphragm. Additionally, ribs contribute to the overall stability of the torso and serve as attachment points for various muscles involved in breathing and posture.

What is "rib"?

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The sole refers to the underside or bottom surface of the foot. It is the part of the foot that comes into contact with the ground during standing, walking, and running. The sole is characterized by a thick layer of skin, called the plantar skin, which is designed to withstand pressure and friction. It contains various sensory receptors that provide feedback for balance, proprioception, and tactile sensations. The sole also houses the plantar fascia, a connective tissue that supports the arch of the foot. Understanding the anatomy and function of the sole is important for maintaining proper foot health, stability, and efficient locomotion.

What is "sole"?

sole

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The eyeball is a complex sensory organ located within the eye socket. It consists of various structures that work together to facilitate vision. The outermost layer, the sclera, provides protection and maintains the shape of the eyeball. The cornea, a transparent dome-shaped structure, refracts light entering the eye. Behind the cornea, the iris controls the amount of light reaching the inner structures. The lens further refracts light to focus it onto the retina. The retina, composed of specialized cells, detects light and converts it into electrical signals. These signals are then transmitted to the brain via the optic nerve, allowing us to perceive visual information. The eyeball is a remarkable organ that enables us to see and interpret the world around us.

What is "eyeball"?

eyeball

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to breathe

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Circulation refers to the continuous movement of blood throughout the cardiovascular system. It is driven by the rhythmic contractions of the heart and facilitated by a network of blood vessels, including arteries, veins, and capillaries. Circulation ensures the delivery of oxygen, nutrients, hormones, and other vital substances to all tissues and organs while removing waste products and carbon dioxide. It plays a vital role in maintaining cellular function, supporting organ systems, regulating body temperature, and facilitating the immune response. Proper circulation is essential for overall health and well-being.

What is "circulation"?

circulation

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sense

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sight

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hearing

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touch

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smell

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The waist is the narrowest part of the torso located between the ribcage and the hips. It serves as a natural division between the upper body and the lower body. The waistline is often considered aesthetically significant, with variations in size and shape reflecting individual body types. It plays a role in determining clothing size and can be emphasized or defined through fashion choices. The waist also serves a functional purpose, providing support and stability to the upper body and facilitating movement. Proper waist alignment and core strength are important for maintaining good posture and overall body balance. The waist is a distinctive feature of the human body, contributing to both physical appearance and functionality.

What is "waist"?

waist

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taste

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A hormone is a chemical substance produced by glands and released into the bloodstream to regulate and control various physiological processes. Hormones act as messengers, traveling through the bloodstream to target cells or organs, where they exert specific effects. They play a crucial role in maintaining homeostasis, growth, development, metabolism, reproduction, and mood regulation. Hormones are involved in numerous bodily functions, including regulating metabolism, controlling blood sugar levels, influencing sexual development and function, and modulating stress responses. Imbalances in hormone levels can lead to various health conditions and disorders. Overall, hormones are essential for coordinating and regulating the complex interconnected systems within the human body.

What is a "hormone"?

hormone

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Tissue refers to a group or collection of specialized cells that work together to perform a specific function. Tissues can be categorized into four main types: epithelial, connective, muscle, and nervous. Epithelial tissue forms protective barriers and linings, connective tissue provides support and structure, muscle tissue enables movement and contraction, and nervous tissue facilitates communication and electrical signaling. Tissues are the building blocks of organs and systems, playing a vital role in maintaining the body's structure, function, and overall homeostasis.

What is "tissue"?

tissue

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A nerve is a bundle of fibers that transmits information between the brain and spinal cord and the rest of the body. Nerves are part of the peripheral nervous system, which includes all the nerves outside of the brain and spinal cord. They consist of sensory fibers that transmit information about external stimuli, such as touch, pain, and temperature, and motor fibers that control muscle movement and glandular secretion. Nerves are essential for communication between the brain and the body and are responsible for the regulation of many bodily functions. Damage to nerves can cause sensory and motor dysfunction, leading to conditions such as paralysis, pain, and numbness.

What is a "nerve"?

nerve

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A gesture is a form of nonverbal communication that involves using physical movements of the body, particularly the hands and arms, to convey messages or express feelings. Gestures can include a wide range of actions, such as waving, pointing, or making specific hand shapes. They often enhance verbal communication by providing additional context or emphasis to spoken words. Gestures can also convey meanings on their own, serving as a complete message in situations where verbal communication may not be possible or appropriate. The meanings of gestures can vary significantly across cultures, making them an important aspect of social interaction and communication.

What is a "gesture"?

gesture

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tear

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blood sugar

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The kidney is a vital organ in the human body that plays a crucial role in maintaining overall health. They are responsible for filtering waste products and excess fluids from the blood, producing urine, and regulating various essential functions, such as electrolyte balance and blood pressure. The kidneys also participate in the production of hormones that help control red blood cell production and maintain bone health. Their bean-shaped structure, located in the back of the abdominal cavity, consists of millions of tiny filtering units called nephrons. Proper kidney function is essential for the body's overall homeostasis and well-being.

What is "kidney"?

kidney

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The lung refers to paired, spongy organs located in the chest cavity that play a crucial role in respiration. They are responsible for the exchange of oxygen and carbon dioxide between the air and the bloodstream, enabling the body to receive oxygen and remove waste gases. The lungs are composed of numerous air sacs called alveoli, which provide a large surface area for efficient gas exchange.

What is "lung"?

lung

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Here you will learn some English words about the human body, such as "armpit", "temple", "thumb", etc. prepared for B1 learners.

"人体"に関する英語の単語 | B1語彙