Comparative Test 3 (Vocab)

Shortening of muscle against a constant load or force.

Little or no contraction although muscle is acting against a force.

Muscle fibers elongate rather than contract as tension increases.

elongated, nonstriated, spindle shaped cells; provide slow, sustained contraction; single nucleus.

Occurs in most viscera, myogenic contraction but modulated by nerve impulses.

Is found in blood vessels, eye, neurogenic contraction.

Moderately enlongated, striated and branching cells tightly united by intercalating discs; myogenic modulated by nerve impulse; one or more nuclei per cell.

Extremely long striated and multinucleated cells; supports body and effects movement of the organism.

A neuron and the skeletal muscle fibers it innervates.

Points where branches of neuron attach to muscle fiber.

Contract slowly to provide tonus. Muscles that move the eyeball in mammals. Postural muscles in appendages of lower vertebrates.

Most vertebrate skeletal muscles. Has two different types which include slow and fast.

Modified muscles tissue in about 250 species of fish.

Make up electric organs. They are modified muscle cells or their motor endplates.

Transducers of mechanical, electrical, thermal, chemical, and radiant energy.

Provide information about the external environment. It is a type of somatic receptors.

Provide information about skeletal muscle activity.

Monitor internal environment.

Sense organ present in all vertebrates.

Membranous labyrinths located in skeletal labyrinth surrounded by fluid-filed perilymphatic space.

Are located in squamous epithelium of the sacculus, utriculus, and lagena/cochlea.

Patches of hair cells found in sensory neuromast sites.

An enlarged neuromast which occurs in a swelling