The structure labeled F in the diagram belongs to which group of spinal nerves?
a) cervical nerves
b) thoracic nerves
c) lumbar nerves
d) sacral nerves
e) coccygeal nerves
c
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A metacarpophalangeal joint is classified as which of the following?
A. A pivot joint B. A ball and socket joint C. A gliding joint D. A hinge joint E. A condylar joint
Describe the structures of the collecting system
What will be an ideal response?
In a simulation of the filtration membrane, which substance should be able to pass through the dialysis tubing?
A) Leukocyte B) Erythrocyte C) Glucose D) Protein
Until recently, acquired immunity was thought to only occur in jawed vertebrates. Which of the following observations suggest that this is NOT the case?
a. Phenoloxidase activity enables hemocytes to form an impermeable wall of melanin around an infecting pathogen. b. Invertebrate immune cells secrete an IL-1 like compound. c. Invertebrates produce lectins, which coat bacterial cells, priming them for phagocytosis. d. Copepods become resistant to tapeworms after an initial exposure. e. None of these.