There are _____ pairs of spinal nerves.
A) 12
B) 21
C) 31
D) 43
Answer: C) 31
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The ________ vertebrae are located in the neck.
A. sacral B. thoracic C. cervical D. cranial
Which of the following is true of primary active transport across cell membranes?
1.Moves substances down their concentration gradients 2.Requires no energy input 3.Substances cross the membranes through pores 4.Is typically coupled to the hydrolysis of ATP. 5.None of these is correct.
If the right sternocleidomastoid contracts unilaterally, the resulting movement will be
A. lateral extension of the head to the right and rotation of the head to the left. B. lateral extension of the head to the left and rotation of the head to the right. C. lateral flexion of the head to the right and rotation of the head to the left. D. lateral flexion of the head to the left and rotation of the head to the right.
A(n) ________ consists of a group of tissues working together to perform specific functions.
A. organ B. organelle C. tissue D. molecule