The esophagus connects to the smallest part of the stomach, known as the
A) body.
B) antrum.
C) pylorus.
D) cardia.
E) fundus.
D) cardia.
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List the maters surrounding the brain from the deepest layer to the most superficial layer. (Figure 14-3)
A) dura, arachnoid, pia B) pia, arachnoid, dura C) arachnoid, dura, pia D) arachnoid, pia, dura E) pia, dura, arachnoid
Action potentials are primarily associated with the membranes of
A) axons only. B) dendrites only. C) cell bodies and axons. D) dendrites and axons. E) cell bodies only.
A dark net is the best color to use when catching a fish
Indicate whether the statement is true or false
The following is a list of the events that occur during a muscle contraction. What is the correct sequence of these events?
1. Myosin cross-bridges bind to the actin. 2. The free myosin head splits ATP. 3. Calcium ion is released from the sarcoplasmic reticulum. 4. The myosin head pivots toward the center of the sarcomere. 5. Calcium ion binds to troponin. 6. The myosin head binds an ATP molecule and detaches from the actin.