Bones are connected to other bones across a joint by
A) ligaments.
B) tendons.
C) osteocytes.
D) cartilage.
E) trabeculae.
A
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Indicate whether the following statements are true or false. ____ All animals have a nervous system. ____ All animals sense and respond to the environment. ____ It is necessary to have a nervous system to sense and respond to the environment
What will be an ideal response?
Predict what would happen if you used the pH indicator thymophthalein instead of phenol red in the above setup. Thymophthalein solution appears colorless below pH 9.3, but blue at higher pH.
What will be an ideal response?
It’s the ninth inning, and the bases are loaded. As the pitcher winds up to throw the ball, how does each tissue in his arm contribute to this critical pitch? The ___________ of his fingers grips the ball. His __________ sends instructions that trigger his ___________ to contract. His ______________ provides stability and transmits the force produced.
A. ectoderm; ectoderm; mesoderm; endoderm B. connective tissue; nerve tissue; muscle tissue; epithelial tissue C. epithelium; ectoderm; mesoderm; endoderm D. epithelial tissue; nerve tissue; muscle tissue; connective tissue
The giant squid axon has been used extensively in research to determine the mechanisms by which neurons generate electrical signals. Scientists used microelectrodes to measure the resting membrane potential (inside relative to outside) and discovered a difference of
A. ?300 mV. B. 0 mV. C. ?70 mV. D. 70 mV. E. 300 mV.