Answer the following statements true (T) or false (F)
1. In order for the necessary bridges to form, potassium must be released from the endoplasmic reticulum.
2. In the sliding filament model of muscle contraction, bridges are formed between the myosin and actin.
3. Energy for muscle contraction is provided when ATP is broken down.
4. In order for movement to take place, when the prime mover contracts, the synergist must relax.
5. In order for movement to take place, the antagonists must do the opposite of the prime mover.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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Answer the following statement true (T) or false (F)
The palatine tonsils lie in the walls of the
A) nasopharynx. B) oropharynx. C) laryngopharynx. D) larynx. E) nasal cavity.
Explain the roles and interactions of each of the following in immunity: B lymphocytes, antibodies, immunoglobulins, T lymphocytes, MHC, HLA.
What will be an ideal response?
Each I band in a skeletal muscle fiber includes
a. overlapping thin and thick filaments b. thick filaments and one Z disc c. thin filaments and one Z disc d. thin filaments and two Z discs e. actin, troponin, tropomyosin and two Z discs