Match from the following list.
1. The structures that serve as the attachment site for the thin filaments and mark the boundaries for one sarcomere.
2. The letter assigned to this structure stands for the German word for middle; it is the attachment site for the thick filaments.
3. The lightest color bands of the sarcomere, comprised only of thin filaments.
4. The band with the most overlap between thick and thin filaments, which unevenly scatters light leading to its' dark appearance.
1. C. Z disk
2. E. M line
3. B. I band
4. A. A band
You might also like to view...
Which area of the myogram shows sustained contraction with partial relaxation?
a) A b) B c) C d) D e) none of these choices
As T-lymphocytes leave the thymus, they are
A. naive and not yet competent. B. naive and immunocompetent. C. activated but not yet competent. D. activated and immunocompetent.
Neurotransmitters are
a. chemical messengers used at chemical synapses. b. found in synaptic vesicles in the synaptic knob. c. released in response to elevated calcium in the axon terminal. d. able to bind to receptors on the post-synaptic cell. e. All of these.
In anatomical position, the ________
A) feet are slightly apart, and the toes point forward B) head is turned to the side C) upper limbs hang in a natural position at the side of the body D) human is sitting