Put the following events of the contraction cycle in the order in which they occur.
1. Cross-bridge detachment
2. Cross-bridge formation
3. Active site exposure
4. Myosin reactivation
5. Calcium ions bind troponin
6. Myosin head pivoting
5, Calcium ions bind troponin
3, Active site exposure
2, Cross-bridge formation
6, Myosin head pivoting
1, Cross-bridge detachment
4 Myosin reactivation
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Which of the following describes the female pelvis?
A) broad and smooth B) prominent bone markings C) acetabulum directed laterally D) bones are heavy E) pelvic outlet is narrow
The major abductor of the arm is the ________ muscle.
Fill in the blank(s) with the appropriate word(s).
In an experiment, a researcher infuses a solution of conjugated bile acids into the portal vein of a rat such that their normal concentration is approximately doubled
He collects samples of hepatic bile from the rat before and after the infusion. Before the infusion, the concentrations of bile acids (BA), phosphatidylcholine (PC), and cholesterol (chol) are 30, 9, and 3 units per mL. What would be the predicted concentrations of PC and chol in the bile following the BA infusion? A. PC: 9; chol: 3 B. PC: 18; chol: 3 C. PC: 9; chol: 6 D. PC: 18; chol: 6 E. PC: 3; chol: 9
Which digestive structure is commonly called the "throat?"
A) Esophagus B) Pharynx C) Oral cavity D) Small intestine