Which of the following does not influence the time necessary for a nerve impulse to be transmitted?
A) length of the axon
B) presence or absence of a myelin sheath
C) diameter of the axon
D) presence or absence of nodes
E) whether or not the impulse begins in the CNS
E
You might also like to view...
A device that is used to separate blood into different components is a __________
Fill in the blank(s) with correct word
One way to determine the total energy in calories of a food is to burn it in a device called a bomb calorimeter. The heat produced during combustion minus the heat added to begin the combustion is the total calories in the food. The typical human digestive tract does not absorb all of the calories in food; thus it is not 100% efficient. Furthermore, calories in undigestible organic compounds may
not be absorbed at all, and thus can be considered to be zero calorie relative to human nutrition. Artificial sweeteners and fats are designed to produce desired sensation in the mouth without being absorbed. These are organic compounds that would release heat in a bomb calorimeter, thus they technically have calories. A. What does this suggest about the accuracy of the bomb calorimeter in determining available food calories for humans? What would be the results of bomb calorimetry of human feces? B. What is it about a particular food substance that may prevent absorption of its calories? C. What happens to the "zero-calorie" molecules as they pass through the digestive tract? What are the potential effects on defecation? What will be an ideal response?
You are examining a human blood smear under the microscope and note a cell with a large, un-lobed nucleus that takes up almost the entire cell volume and violet granules in the cytoplasm. Identify the cell
A) Eosinophil B) Basophil C) Neutrophil D) Lymphocyte
Which carpal bone is not in the distal row of carpal bones?
A. trapezium B. hamate C. capitate D. triquetrum E. trapezoid