The hair follicle is a complex structure embedded in the skin that anchors the hair shaft and supports growth. It consists of the bulb, dermal papilla, outer and inner root sheaths, and sebaceous glands. Follicular stem cells in the bulge View Diagram Structure of the Hair Follicle
The meninges of the brain are three protective layers: dura mater, arachnoid mater, and pia mater. The dura is tough and fibrous, providing mechanical protection and forming dural venous sinuses. The arachnoid mater is a delicate, web-like membrane, under which View Diagram Overview of the Meninges of the Brain
Several important structures open into the nasal cavity, allowing drainage and airflow regulation. The maxillary, frontal, and anterior ethmoidal sinuses drain into the middle meatus, while the posterior ethmoidal sinuses open into the superior meatus. The nasolacrimal duct drains tears View Diagram Openings into the Nasal Cavity Draining Paranasal Sinuses Lacrimal Duct and Auditory Tube
Lymph nodes of the head and neck are arranged in superficial and deep groups. Superficial nodes include submental, submandibular, parotid, mastoid, and occipital nodes, which drain specific regions of the scalp and face. Deep cervical nodes lie along the internal View Diagram Lymph Nodes of the Head and Neck
The vulva encompasses all of the external female genital structures, including the mons pubis, labia majora, labia minora, clitoris, and surrounding soft tissues that frame the vaginal and urethral openings. The mons pubis forms a soft, fatty pad over the View Diagram Anatomy of the Vulva Labia Clitoris Mons Pubis
The surface anatomy of the eyelids includes the upper and lower lids, which protect the eye and maintain the tear film. The upper eyelid is larger, more mobile, and contains the levator palpebrae superioris muscle that lifts it during opening, View Diagram Surface Anatomy of the Eyelids Uppper Lower
Arm with Bulging Veins: Prominent veins in the arm can result from increased vascular pressure, exercise, low body fat, or venous valve issues, often appearing as bulging, rope-like structures under the skin.
Tongue: The tongue is a muscular organ involved in taste, speech, and food manipulation, covered in papillae that contain taste buds and controlled by intrinsic and extrinsic muscles.
Tooth: A tooth consists of enamel, dentin, pulp, and cementum, and is anchored into the jaw by periodontal ligaments; it functions in mechanical digestion and sensory perception.
Photo of Linea Nigra: The linea nigra is a dark vertical line that can appear on the abdomen during pregnancy due to hormonal changes; it typically fades postpartum.
Photo of Embryo: An embryo photo shows the early stages of human development, typically with visible somites, neural tube, limb buds, and heart bulge around week 46.
Varicose Vein: Varicose veins occur when valves in superficial veins become incompetent, causing blood to pool and the veins to become enlarged, twisted, and visible beneath the skin, typically in the legs.
Photo of Placenta: A placenta photo typically shows the fetal side with vessels radiating from the umbilical cord and the maternal side with a spongy, vascular appearance that interfaces with the uterus.
External Nose: The external nose is composed of cartilage and bone, covered by skin, and includes the nostrils and nasal bridge, providing a passage for airflow and supporting olfaction.
In addition to the physical external parts, the human body can also be divided by organ system and the parts that compose those systems. The main organ systems of the human body are the respiratory system, the vascular system, the View Diagram Categories classification and components of human body
Structure of Human Mouth Histology Functions of the Mouth Diseases of the Mouth The mouth contains some of the strongest muscles in the human body. One of these muscles is the tongue. The tongue is the pound for pound strongest View Diagram Mouth anatomy with labels
The planes of the body are the sagittal plane (or the lateral plane), the coronal plane (or the frontal plane), and the transverse plane. The sagittal plane/the lateral plane divides the body into right and left sides, right and left View Diagram Body planes diagram
Neck Lymph Diagram: A neck lymph diagram highlights the lymph nodes and lymphatic vessels in the neck, which play a crucial role in immune defense and fluid drainage from the head and neck regions.
Kids Body Diagram In Spanish: A Spanish-labeled body diagram for kids identifies parts like cabeza (head), brazos (arms), and piernas (legs), making anatomy learning bilingual and accessible.
Elbow Anatomy Diagram With Labels: An elbow anatomy diagram with labels shows the bones, muscles, and ligaments of the elbow joint, explaining how it allows for flexion, extension, and rotation of the arm.
