a.are electrically insulated from one another.
b.are highly dependent on anaerobic metabolism
c.are highly dependent on glucose as a nutrient.
d.lack striations.
e.desmosomes link adjacent cell membranes via intercalated discs.
2006-12-10 02:21:38 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Medicine
Cardiac muscles are striated.
The answer would be...
e.desmosomes link adjacent cell membranes via intercalated discs.
2006-12-10 03:33:16 · answer #1 · answered by coldflesh 3 · 1⤊ 1⤋
The correct answer is E. Intercalated discs are gap junctions between the cells of the heart muscle. The purpose is to allow ion flow between cells so that the heart beats as a unit. Heart muscle is the only tissue in the body that has these.
2006-12-10 15:03:11 · answer #2 · answered by mr.answerman 6 · 0⤊ 0⤋
The true answer is C. Here's why:
A: gap junctions link the cells electronically so that electric stimuli can be passed from one cell to the next
B: Nope, they need oxygen. If they don't have oxygen, you get a heart attack.
C: Yea, they need energy. Glucose gives lots of energy.
D: They do indeed have striations. Cardiac cells are striated.
E: As I said for A, they are linked via gap junctions. Desmosomes link the cytoskeletal networks of adjacent cells.
2006-12-10 05:02:34 · answer #3 · answered by bflute13 4 · 0⤊ 1⤋
i would tick A. All breathing is genrally passive, controlled by the respiratory centre in the brain stem. To Breath in the lungs generate a negitive pressure. The average lung volume is about 6-7 mililetres per kilo. 60L is ridiculous!
2016-03-13 05:23:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋
a. false - they conduct electrical impulses so the heart beats as a unit
b. false - the heart needs oxygen!
c. not sure (dependent, yes, highly dependent ??)
d. false - cardiac muscle is striated
e. TRUE
Check out slides 48 & 49 for pictures:
http://www.meddean.luc.edu/lumen/MedEd/Histo/frames/h_frame7.html
2006-12-10 04:58:50 · answer #5 · answered by Pangolin 7 · 1⤊ 1⤋
d. Lack Striations
2006-12-10 02:31:19 · answer #6 · answered by sweetpea 4 · 0⤊ 3⤋
I would have chosen E
2006-12-10 02:29:43 · answer #7 · answered by Bingo's Mommy 5 · 0⤊ 1⤋
A
2006-12-10 02:24:49 · answer #8 · answered by bluestar 4 · 0⤊ 3⤋