Which of the following represents the correct pathway for sperm during ejaculation?
A. Ductus deferens - ejaculatory ducts - rete testes - efferent ductules - epididymis - seminiferous tubules - prostatic urethra - penile urethra - outside the body
B. Rete testes - efferent ductules - epididymis - seminiferous tubules - ductus deferens - ejaculatory ducts - prostatic urethra - penile urethra - outside the body
C. Seminiferous tubules - ductus deferens - ejaculatory ducts - rete testes - efferent ductules - epididymis - prostatic urethra - penile urethra - outside the body
D. Seminiferous tubules - rete testes - efferent ductules - epididymis - ductus deferens - ejaculatory ducts - prostatic urethra - penile urethra - outside the body
Answer: D
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What is the relationship between the accuracy of a subject's tactile localization and the results of the two-point discrimination test?
A) Areas with the most accurate touch localization have the largest two-point thresholds. B) Areas with the most accurate touch localization have the smallest two-point thresholds. C) Areas with the most accurate touch localization have the largest two-point thresholds, and areas with the least accurate touch localization have the smallest two-point thresholds. D) Areas with the least accurate touch localization have the smallest two-point thresholds.
Increased strength of a trained muscle is due to
A. an increased number of muscle fibers. B. the nervous system's ability to recruit a large number of motor units simultaneously. C. elimination of unnecessary enzymes and metabolic pathways. D. elimination of all fat deposits. E. elimination of unnecessary connective tissue.
Choose the incorrect statement about white blood cells.
They carry oxygen to the body cells. They can leave the capillaries and move through body tissues. They can help the body defend against disease. They are formed in red bone marrow.
A single lobe of a kidney is comprised of ________.
A. one collecting duct and all nephrons that drain into it B. one major calyx and all of its minor calyces C. a renal medulla and two renal columns D. two calyces and a renal pelvis E. one pyramid and the overlying cortex