The ciliary muscle
A. controls the shape of the lens to maintain a clear image of focus at various distances.
B. is the part of the eye that contains rods, cones, and bipolar cells.
C. is extremely sensitive to light and responsible for night vision.
D. is the internal part of the cochlea with hair cells that are stimulated by sound waves.
E. is the part of the inner ear that recognizes rotational equilibrium.
Answer: A
You might also like to view...
The possibility of an abscess should be considered if this bacterial group is isolated in the blood:
a. Clostridium septicum. b. Bacteroides fragilis. c. Streptococcus anginosus. d. Aeromonas hydrophila.
Which statement correctly describes DNA base pairing?
a. Two hydrogen bonds bind A and T; three hydrogen bonds bind G and C. b. Two hydrogen bonds bind A and C; three hydrogen bonds bind T and G. c. Two hydrogen bonds bind G and C; three hydrogen bonds bind A and T. d. Two hydrogen bonds bind A and T, and two hydrogen bonds bind G and C. e. Three hydrogen bonds bind A and C, and three hydrogen bonds bind T and G.
The lateral movement of transmembrane proteins can be restricted by several different mechanisms. Which mechanism best describes the process by which an antigen-presenting cell triggers an adaptive immune response?
(a) proteins are tethered to the cell cortex (b) proteins are tethered to the extracellular matrix (c) proteins are tethered to the proteins on the surface of another cell (d) protein movement is limited by the presence of a diffusion barrier
Lymphocytes
A) Gain tolerance to self by destruction of lymphocytes that could react against self. B) Possess MHC antigens for recognizing self. C) Develop into clones of B and T-cells with extreme variations of specificity. D) Have membrane receptors that recognize foreign antigens. E) All of these choices are correct