Which condition is characterized by a malignant, metastasizing tumor of the mammary gland?
A) menopause
B) fibrocystic disease
C) breast cancer
D) ductal blockage
E) endometriosis
C
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What part of the retina lacks photoreceptors?
A. Optic disc B. Posterior retina C. Macula lutea D. Fovea centralis E. All of the choices are correct.
A unipolar neuron with a soma in a ganglion just outside the spinal cord is functionally classified as which of the following?
A. Somatic motor neuron B. Visceral motor neuron C. Interneuron D. Sensory neuron E. Synaptic neuron
Which of the following systems is matched most accurately to the life function it provides?
A) integumentary system - movement B) nervous system - excretion C) muscular system - maintaining boundaries D) nervous system - responsiveness E) respiratory system - digestion
Immature, undifferentiated bone cells are called
A. osteoclasts. B. osteoprogenitor cells. C. osteocytes.