L27 Cardiac and Smooth Muscle: Comparison of Functional Differences

[blank_start]Skeletal[blank_end] muscle is for movement, posture, and heat. [blank_start]Cardiac[blank_end] muscle is for pumping [blank_start]blood[blank_end]. [blank_start]Smooth[blank_end] muscle is for moving [blank_start]contents of the viscera[blank_end] and has specific functions.

Which of these descriptions matches skeletal muscle?

Smooth muscle is essential for building pressure in the blood vessels.

Which two types of junction are important in cardiac muscle(cardiomyocytes), and what is their nature of connection?

Choose the correct statement about the heart.

Choose the correct sequence of steps for contraction of the heart.

Choose the correct statements about contraction of the heart.

The heart can beat outside of the body because of it's own 'mini nervous system.'

Choose the incorrect statement about smooth muscle.

Single unit smooth muscle is [blank_start]joined[blank_end] by gap junctions. [blank_start]Only some[blank_end] cells need receptors for neurotransmitters, and the action potential is transferred to all other [blank_start]connected[blank_end] cells. Thus, they work as a single unit. Examples include the digestive, urinary, and reproductive tract walls. In multi-unit smooth muscle, there are [blank_start]no gap junctions[blank_end] between cells and [blank_start]all[blank_end] cells have receptors. This allows for finer or more [blank_start]precise[blank_end] muscle control. An example is the muscles in the eye, or the blood vessel s/sheets.

Relaxation of smooth muscle causes vasodilation in blood vessels, while contraction causes vasoconstriction.

Normal smooth muscle tone is a semi tensed state.

Choose the correct statement about smooth muscle contraction.

Skeletal muscle is:

Cardiac muscle is:

Smooth muscle is:

Skeletal and smooth muscle are both thin filament regulated.

Smooth muscle does not have T-Tubules.