Body & Anatomy A–⁠Z

Every Rinnit guide to the human body and its anatomy, listed alphabetically. Each guide is medically reviewed by Dr. Baraa Alnahhal, MD. To browse with summaries, see the Body & Anatomy category.

A

• Abdominal Muscles

• Abducens Nerve (CN VI)

• AC Joint

• Accessory Navicular Bone

• Adam's Apple

• Adipose Tissue

• Adrenal Cortex

• Adrenal Gland and Medulla

• Adrenaline

• Amniotic Fluid

• Amniotic Membrane

• Amniotic Sac

• Ampulla of Vater

• Amygdala

• Ankle Joint

• Ankle Ligaments

• Anterior Chamber

• Anterior Placenta

• Antibodies

• Anus

• Aortic Valve

• Apocrine Glands

• Aponeurosis

• Appendix

• Arteries

• Ascending Aorta

• Autonomic Nervous System

• Axial Skeleton

• Axilla

• Axillary Artery

• Axillary Nerve

B

• Back Muscles

• Basophils

• Bile

• Bile Duct

• Biliary Tract

• Blast Cells

• Blood

• Body Hair

• Body Tissue

• Bowman’s Capsule

• Brachial Artery

• Brachiocephalic Artery

• Brachiocephalic Vein

• Bronchi

• Brown Fat

C

• Calf Muscle

• Carotid Artery

• Cartilage

• Celiac Trunk

• Central Nervous System (CNS)

• Cerebellum

• Cerebrospinal Fluid (CSF)

• Cerebrum

• Chest (Thorax)

• Cholecystokinin

• Chyle

• Ciliary Body

• Circle of Willis

• Circulatory System

• Circumflex Artery

• Clavicle

• Clitoris

• Coccyx

• Colostrum

• Common Hepatic Artery

• Complement System

• Conjunctiva

• Cornea

• Cranial Nerves

• Cytokines

D

• Deltoid Ligament

• Deltoid Muscles

• Depth Perception

• Dermatomes

• Dermis

• Descending Aorta

• Diaphragm

• Digestive System

• DNA

• Duodenum

E

• Ear

• Endocrine System

• Endometrium

• Eosinophils

• Epicardium

• Epiglottis

• Esophagus

• Estrone

• Ethmoid Sinus

• Eustachian Tubes

• External Iliac Vein

• Eye Lens

F

• Facial Artery

• Facial Muscles

• Fallopian Tubes

• Femoral Artery

• Femoral Nerve

• Femur

• Fenestrated Capillaries

• Fetal Pole

• Fibrin

• Fibula

• Fimbriae

• Fluids of Sight

• Follicular Phase

• Foreskin

• Frenum

• Frontal Lobe

G

• Gallbladder

• Gastrin

• Genes

• Gerota’s Fascia

• Ghrelin

• Glands

• Glossopharyngeal Nerve

• Glymphatic System

• Granulocytes

• Great Vessels of the Heart

• Gut Microbiome

• Gut-Brain Connection

H

• Helper T Cells

• Hemodynamics

• Hepatic Veins

• Hippocampus

• Human Airway

• Human Body Anatomy

• Human Brain

• Human Chorionic Gonadotropin (hCG)

• Human Immune System

• Human Inner Ear

• Human Liver

• Human Lungs

• Human Mouth

• Human Nervous System

• Humerus

• Hymen

• Hyoid Bone

• Hypoglossal Nerve

• Hypothalamus

I

• IgG

• Ileum

• Iliac Artery

• Immunoglobulin D (IgD)

• Inferior Epigastric Artery

• Inguinal Ligament

• Inguinal Lymph Nodes

• Insulin

• Internal Thoracic Vein

• Interstitium

• Iris

J

• Jejunum

• Joints

K

• Kidney

• Knee Ligaments

L

• Labial Hypertrophy

• Lactic Acid (Lactate)

• Lanugo

• Leg Muscles

• Leptin

• Ligaments

• Linea Alba

• Linea Nigra

• Lip Anatomy

• Luteinizing Hormone (LH)

• Lymph

• Lymphatic Capillaries

• Lymphatic System

• Lymphocytes

M

• Macrophages

• Macula

• Male Reproductive System

• Mast Cells

• Maxillary Artery

• Meconium

• Mediastinum

• Medulla Oblongata

• Melanin

• Membranous Urethra

• Menarche

• Mesentery

• Metabolism

• Metacarpals

• Mitral Valve

• Monocytes

• Montgomery Glands

• Motilin

• Mucosa

• Mucus

• Mullerian Duct

• Muscles

• Myelin Sheath

N

• NAD

• Nail Anatomy

• Nail Matrix

• Nasopharynx

• Natural Killer Cells

• Navel

• Neck Muscles

• Nerves

• Neutralizing Antibodies

• Nipple Anatomy, Function, and Health

• Nose

O

• Obturator Nerve

• Occipital Lobe

• Oculomotor Nerve (CN III)

• Olfactory Nerve (CN I)

• Oncogenes

• Opsonization

• Optic Chiasm

• Optic Nerve

• Ossicles

• Osteoblasts and Osteoclasts

• Ovaries

P

• Pancreas

• Parasympathetic Nervous System

• Parathyroid Glands

• Parotid Gland

• Pectineus Muscle

• Pelvis

• Penis

• Perfusion Pressure

• Pericardium

• Perineum

• Peripheral Nervous System

• Peristalsis

• Peritoneum

• Peritubular Capillaries

• Pharynx (Throat)

• Photoreceptors

• Phrenic Nerve

• Pineal Gland

• Pituitary Gland

• Placenta

• Plasma

• Platelets

• Pleura

• Pleurisy

• Polyclonal Antibodies

• Pons

• Popliteal Artery

• Portal Vein

• Posterior Pituitary

• Posterior Tibial Vein

• Prefrontal Cortex

• Progesterone

• Prolactin

• Prostate

• Proteins

• Psoas Muscle

• Puberty

• Pubic Symphysis

• Pulmonary Arteries

• Pulmonary Veins

• Pulse Pressure

• Pyloric Sphincter

Q

• Quadriceps (Quad Muscles)

R

• Radial Artery

• Radial Nerve

• Radius Bone

• Rectum

• Red Blood Cell Function

• Regulatory T Cells

• Relaxin

• Renal Artery

• Renal Cortex

• Renal Sinus

• Renal Vein

• Renin

• Respiratory System

• Retina

• Rib Cage (Thoracic Cage)

• Right Atrial Appendage

• Right Ventricular Outflow Tract (RVOT)

• Rotator Cuff

• Round Ligament

S

• Saliva

• Salivary Glands

• Saphenous Nerve

• Saphenous Vein

• Scabs

• Scapula

• Sclera

• Scrotum

• Sebaceous Glands

• Semen

• Seminal Vesicles

• Shoulder Joint

• Shoulder Muscle Anatomy and Stability

• Skeletal System

• Skene’s Gland

• Skin

• Skull Sutures

• Sleep Basics

• Small Intestine

• Smooth Muscle

• Soft Tissue

• Somatic and Germline Mutations

• Somatic Nervous System

• Sperm

• Sphenoid Sinus

• Sphincters

• Spinal Cord

• Spine

• Spleen

• Splenic Flexure

• Splenic Vein

• Stem Cells

• Sternocleidomastoid Muscle (SCM)

• Sternum (Breastbone)

• Stomach

• Subclavian Artery

• Subclavian Vein

• Substantia Nigra

• Superficial Temporal Artery

• Superior Mesenteric Artery

• Superior Mesenteric Vein

• Sural Nerve

T

• Tears

• Teeth

• Temporal Lobe

• Testicles

• Thigh Muscles

• Three Stages of Labor

• Thyroid Gland

• Trigeminal Nerve

• Trochlear Nerve

• Tumor Suppressor Genes

• Tympanic Membrane (Eardrum)

U

• Ulna Bone

• Ulnar Artery

• Ulnar Nerve (Funny Bone)

• Umbilical Cord

• Urachus

• Ureters

• Urethra

• Urinary System

• Urothelium

• Uterus

• Uterus Involution

• Uvea

• Uvula

V

• Vagina

• Vaginal Delivery

• Vagus Nerve

• Vas Deferens

• Vellus Hair (Peach Fuzz)

• Vertebral Artery

• Vestibular System

• Vestibulocochlear Nerve

• Vestigial Structures in Humans

• Vocal Cords

• Vulvar Anatomy