Where muscle and exercise names come from: biceps to burpee

Biceps, triceps, quadriceps: the words sound like someone deliberately made the gym harder to talk about. The system behind them is about as simple as naming gets — a Latin speaker counted the heads of the muscle and put the number in the name. Exercise names are even plainer, coming from a piece of kit, an ordinary English verb, or a surname.

A muscle is a little mouse

The Latin musculus is a diminutive of mus, mouse. Flex your arm and the biceps slides under the skin as though something small were running beneath it, and as far as anyone can tell that is the entire reason. The Greeks got there first with mys, a word that covers both mouse and muscle; the Romans just translated the picture.

The rest of the vocabulary was built the same way. A tendon is tendo, from tendere, to stretch. A ligament comes from ligare, to bind. These are dissection-table names — what somebody saw, or felt between finger and thumb. What happens to that tissue once you remove the load shows up most sharply in the muscles of astronauts in orbit.

Biceps, triceps, quadriceps: counting heads

Biceps means two-headed: bi for two, plus -ceps from caput, head. The full name is biceps brachii, the two-headed muscle of the upper arm. Its long and short heads attach at two separate points on the shoulder blade and merge into a single tendon at the elbow.

Triceps brachii has three heads — long, lateral and medial. Quadriceps femoris has four: rectus femoris plus the three vasti, lateralis, medialis and intermedius. The second word is not decoration. There is also a biceps femoris, the two-headed muscle at the back of the thigh, and without brachii or femoris you would not know which two-headed muscle anyone meant.

One aside: biceps is not a plural. The gym-floor singular bicep appeared when somebody read that final s as a count.

Shape, size and postcode

The second big naming method is a drawing. The deltoid is named after the Greek letter delta because it is triangular. The trapezius is named after the trapezium, the rhomboids after the rhombus, and serratus anterior after serra, a saw — its slips grip the ribs like teeth.

Size does the same job. Latissimus dorsi is a superlative: the widest muscle of the back. Gluteus maximus, medius and minimus are ranked by size, not importance. Teres major and minor mean round; piriformis means pear-shaped.

The lower leg holds the two most vivid names. Gastrocnemius comes from the Greek gaster (belly) and kneme (lower leg) — the belly of the leg, since the calf bulge is visible from across a room. Soleus comes from solea, a word meaning both sandal and the flatfish; the muscle is flat like both.

Named for the job, named for the bones

Where the shape was unremarkable, the muscle was named for what it does. Erector spinae straightens the spine, levator scapulae lifts the shoulder blade, flexor and extensor digitorum bend and straighten the fingers, the adductors draw the leg towards the midline. The masseter, the jaw muscle, takes its name from the Greek verb for chewing.

A third group is simply a list of attachments. The sternocleidomastoid in the neck runs from the breastbone (sternum) and collarbone (Greek kleis) to the mastoid process behind the ear — three landmarks, one name. Supraspinatus and infraspinatus sit above and below the spine of the scapula. The whole rotator cuff, all four of them, is named purely by address.

One name is a small story. Sartorius, the longest muscle in the body, comes from sartor, tailor. Tailors worked sitting cross-legged, and this muscle rotates and bends the leg into exactly that position.

Kit, verbs and one dead weight

A dumbbell is literally a mute bell. English bell-ringers trained with a clapperless rig — all the effort, none of the noise — and the name stuck even after the apparatus shrank to a short bar with weight on each end. Barbell is a later coinage on the same pattern, and kettlebell is a straight translation of the Russian girya.

Most other names are plain verbs: squat, row, curl, dip, press, and the press-up that Americans call a push-up. The lunge arrived from fencing by way of the French allonger, to extend. The good morning is named for the obvious: bowing forward with a bar on your back looks like a deep greeting.

The deadlift is the contested one. The usual explanation is that the bar is lifted from a standstill as dead weight, with no momentum, unlike the Olympic lifts where the bar is already moving. Versions of the story differ in detail, but the distinction between a moving load and a stationary one is real, and you feel it most when working towards a one-rep maximum.

Surnames and countries

The burpee is named after Royal H. Burpee, an American physiologist who put together a four-count movement in the 1930s as a quick fitness test. His version had no press-up and no jump; those came from military training programmes and, much later, from group classes.

The Arnold press carries Arnold Schwarzenegger's name, the Pendlay row that of the American weightlifting coach Glenn Pendlay, and the Zercher squat that of the strongman Ed Zercher, who carried the bar in the crooks of his elbows. The hack squat is usually credited to the strongman Georg Hackenschmidt, though there is a rival explanation via the German Hacke, heel. That one has never been settled.

The national labels are the shakiest of all. The Romanian deadlift is attributed to Romanian lifters around the turn of the 1990s, and the Bulgarian split squat to the Bulgarian weightlifting school. Both stories circulate in several versions and are best treated as anecdote rather than record.

Why the Latin survives

Anatomical names are standardised on an international list, so the same muscle carries the same name in Manchester, Lagos and Tokyo. That is also why eponyms are quietly retreating: the Achilles tendon, named for a mythical hero, increasingly appears in textbooks as the calcaneal tendon — a name that tells you where it is.

What no name tells you is how to train. A name describes a shape, a head count or an address, not how a muscle actually receives the signal to grow, nor how close to failure a set should go. Etymology will not add a kilo to the bar, but it does help you remember what attaches where, and why a given exercise burns exactly where it does.

The short version

• Biceps, triceps and quadriceps mean two-, three- and four-headed; the number counts heads of the muscle, not size or strength.
• Musculus is a diminutive of mouse; tendon comes from the verb to stretch, ligament from the verb to bind.
• Muscles are named by five things: head count, shape, size, attachment points and the job they do.
• Exercise names come from kit (dumbbell, kettlebell), from verbs (squat, row, lunge) or from surnames (burpee, Zercher, Pendlay).
• The national labels, Romanian and Bulgarian, rest on anecdote — and no name says anything about whether the exercise suits you.