Question

Which of the following correctly describes the appearance of muscle tissue found in the heart?

Single-nucleus, non-striated, short cells
Single-nucleus, striated, branching cells
Multinucleated, non-striated, branching cells
Multinucleated, striated, long threadlike cells

Answer 1

d ?

Answer 2

@jgirl128

Answer 3

"Each cardiac muscle fiber contains a single nucleus and is striated, or striped, because it appears to have light and dark bands when seen through a microscope."

"Cardiac muscle cells have a branched shape so that each cell is in contact with three of four other cardiac muscle cells. Together all of the cardiac muscle cells in the heart form a giant network connected end to end. At the ends of each cell is a region of overlapping, finger-like extensions of the cell membrane known as intercalated discs."

http://www.innerbody.com/image_musc01/musc71.html

Answer 4

I'm looking for another source, give me a sec.

Answer 5

"Cardiac muscle is unique because it is striated, like skeletal muscle, yet involuntary, like smooth muscle."

"The striations in the cardiac muscle, unlike those in skeletal muscles, are branched, creating a more tenacious structure."

http://www.wisegeek.org/what-is-the-cardiac-muscle.htm

"The myofibrils of each cell (and cardiac muscle is made of single cells — each with a single nucleus) are branched."

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Muscles.html

I believe the answer is B.

Answer 6

thank you so much once again going to read the links you sent me then study for my test really appreciate everything

Answer 7

it's no problem :) I hope you ace your test!