The photo at the top right is a cleared piece of skeletal muscle showing a coiled larva within.
The photo at the top left shows a larva that has been liberated from muscle by an artificial acid-enzyme digest solution. The thick, rounded end is the posterior, and the thinner, pointed end is the anterior. The anterior end has the appearance of a stack of disks. These are stichocytes, secretory cells which surround the esophagus. Collectively, the whole series of stichocytes and the esophagus they surround is called a stichosome, and is common in trichurid nematodes. The posterior end of the worm is filled largely with the genital primordium. Muscle larvae are about 1 mm long.
The photo at the bottom is a section of rat tongue containing numerous (at least 6) muscle larvae. The surface of the tongue is to the right. Note how dense the larval cysts are. In severe infections, many thousand larvae per gram of muscle may be present.