Ian W

Overview of Tooth Anatomy Teeth are important for breaking down food before we swallow it.[1] In the tooth anatomy, we can find four types of teeth, each with a different job.[2] Incisors cut food, canines tear it, and molars and premolars crush it.[2] Most people have 32 teeth,[3] but that can vary. The outside layer, … Read more

Overview of Shoulder Anatomy The human shoulder anatomy is composed of three bones: the clavicle (collarbone), scapula (shoulder blade), and humerus (upper arm bone).[1][2] These bones are connected by joints, with the primary articulation being the glenohumeral joint, commonly referred to as the shoulder joint.[2] Additional joints, including the acromioclavicular (AC) joint, the sternoclavicular (SC) … Read more

Overview of Wrist Anatomy The wrist joint, or the radiocarpal joint, is a crucial connection between the forearm and hand.[1] It allows various movements like bending, straightening, side-to-side, and twisting.[1][2] This joint is like a modified ball and socket, allowing flexibility while maintaining stability.[2][1] The wrist anatomy (joint) is made up of bones that form … Read more

Overview of Eye Anatomy An eye is a part of an organism that helps it see things. It takes in light and turns it into signals for the brain.[1] In fancy terms, it is an optical system that collects light, adjusts its intensity, focuses it to form an image, and sends signals to the brain.[1] … Read more

Overview of Ear Anatomy The human ear performs two principal physiological roles: auditory transduction (hearing) and vestibular equilibrium (balance).[1] It functions by converting sound waves into electrochemical signals that the brain interprets as sound.[2] Anatomically, the ear is organized into three distinct divisions: the outer (external) ear, the middle ear, and the inner ear.[1][10] The … Read more

Overview of Hand Anatomy The human hand is one of the most important and versatile parts of the upper limb.[1] It is designed for both strength and precision, allowing us to feel, grasp, hold, and move objects with remarkable control.[1] From performing powerful actions like lifting or climbing to delicate tasks such as writing, typing, … Read more

Overview of Thigh Anatomy The thigh is the large part of your leg between your hip and knee. It is the upper leg. Inside, there is a big, strong bone called the femur.[13] It makes a ball-and-socket joint at your hip and a hinge joint at your knee.[13] Soccer players often have defined thigh muscles … Read more

Overview of Finger Anatomy Fingers are unique parts of the hand found in humans and many other animals. Over millions of years, they have developed to handle both delicate and strong tasks with skill.[1] Each finger has three bones, called phalanges, which are joined together and surrounded by muscles, tendons, and ligaments that help them … Read more

Overview of Biceps Anatomy The biceps brachii — commonly referred to as the “biceps” — is a large, thick, fusiform muscle on the ventral (anterior) surface of the upper arm.[1] It consists of two proximal heads: the short head (caput breve) and the long head (caput longum).[1] The short head originates at the coracoid process … Read more

Overview of Arm Anatomy The upper extremity, or arm, is a vital part of the human body that enables us to lift, hold, and move objects.[1] The human arm anatomy consists of three main parts: the upper arm, forearm, and hand. It stretches from the shoulder to the fingers and includes 30 bones in the … Read more