Contractile

Bacteriophage P22, a member of the Podoviridae by morphology due to its short, non-contractile tail.

Circulation Heart anatomy The ostrich heart is a closed system, contractile chamber.

In more advanced animals, many glands are formed of epithelial cells. citation Muscle tissue Cross section through skeletal muscle and a small nerve at high magnification ( H&E stain Muscle cells (myocytes) form the active contractile tissue of the body.

In the genus Cephalodiscus, asexually produced individuals stay attached to the contractile stalk of the parent individual until completing their development.

Less ATP availability ultimately results in an energy deficit presenting as reduced cardiac efficiency and contractile dysfunction.

Life cycle Infection Lambda phage J protein interaction with the LamB porin Lambda phage is a non-contractile tailed phage, meaning during an infection event it cannot 'force' its DNA through a bacterial cell membrane.

Subsequently the phages evolved contractile or short tails and elongated heads.

The ancestral tailed phage had an icosahedral head of about 60 nanometers in diameter and a long non contractile tail with sixfold symmetry.

These contractile cells are connected by intercalated discs which allow a rapid response to impulses of action potential from the pacemaker cells.

The tentacular system connects the tentacles at the tip of the introvert to a ring canal at their base, from which a contractile vessel that runs along the esophagus and ends blindly posteriorly.

When feeding, it has a multinucleate base and a contractile stalk up to 150 μm in length, supporting a relatively small uninucleate head, where the central granule and axopods are located.