Which of the following statements is/are true?
A. When the knee undergoes a significant amount of flexion, it is necessary for the femur to slide forward on the tibia in order to prevent its rolling off of the tibial plateau.
B. During extension, the femur must slide backwards on the tibia.
C. both A and B
D. none of the above
C. both A and B
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In the regulation of enzymes, negative feedback ensures that a lot of product can be made from only a little bit of substrate
Indicate whether this statement is true or false.
What do the posterior gray horns of the spinal cord contain?
A. Dorsal root ganglia B. Motor neurons C. Interneurons D. Myelin E. Dorsal roots
What is the difference in function between the smooth and rough endoplasmic reticulum (ER)?
A. The rough ER helps with cellular movements, while the smooth ER does not. B. The rough ER produces ATP, while the smooth ER does not. C. The rough ER conducts lipid synthesis, while the smooth ER conducts protein synthesis. D. The rough ER conducts protein synthesis, while the smooth ER conducts lipid synthesis. E. The rough ER breaks down lipids, while the smooth ER breaks down proteins and debris.
Which of the following cutaneous receptors is NOT sensitive to fine touch?
A. Merkel disks B. Root hair plexus C. Meissner corpuscles D. Pacinian corpuscles