Question

read each statement below. determine whether that statement pertains to cardiac muscle, smooth muscle, or both. then, click and drag the box into the appropriate category below. labels drop zones reset all ions pass from cell to cell via specialized cell junctions good capacity for repair of damaged cells has intercalated discs responsible for peristalsis does not require nervous stimulation cardiac muscle (1/3) smooth muscle (2/3) both (3/3)

Explanation:

1. Ions pass from cell - to - cell via specialized cell junctions: Both cardiac and smooth muscle have gap junctions (a type of specialized cell junction) that allow for the passage of ions between cells, enabling coordinated contractions.
2. Good capacity for repair of damaged cells: Smooth muscle has a relatively good capacity for repair of damaged cells, while cardiac muscle has a very limited ability to regenerate and repair damaged cells. So this pertains to smooth muscle.
3. Has intercalated discs: Intercalated discs are unique to cardiac muscle. They contain gap junctions and desmosomes and are crucial for the synchronized contraction of cardiac muscle cells.
4. Responsible for peristalsis: Peristalsis is the rhythmic contraction and relaxation of smooth muscle that propels substances through tubes such as the digestive tract. So this pertains to smooth muscle.
5. Does not require nervous stimulation: Both cardiac and smooth muscle are involuntary muscles. Cardiac muscle has an intrinsic pacemaker (the sino - atrial node) and can contract without nervous stimulation, and smooth muscle can also contract spontaneously in some cases without direct nervous input.

Answer:

1. Ions pass from cell to cell via specialized cell junctions: Both
2. Good capacity for repair of damaged cells: Smooth Muscle
3. Has intercalated discs: Cardiac Muscle
4. Responsible for peristalsis: Smooth Muscle
5. Does not require nervous stimulation: Both