List 3 ways that llamas serve humans
What will be an ideal response?
meat, hair, pack animals, pets, breeding, alternative livestock
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Match the structures with the accurate description.
1. inward extensions of the muscle cell membrane 2. highly organized bundles of contractile proteins within a skeletal muscle cell 3. a single muscle cell 4. the muscle cell membrane 5. a bundle of adjacent muscle cells A. muscle fiber B. fascicle C. sarcolemma D. myofibril E. t-tubules
Which center bears the primary responsibility for generating the respiratory rhythm, but is influenced by several other centers?
A) PRG B) VRG C) DRG D) SRG
The intervertebral discs are composed of the tissue ________.
Fill in the blank(s) with the appropriate word(s).
If the atomic number of an element is 9 and the mass number is 19, how many neutrons does the atom have?
A. 9 B. 19 C. 10 D. 28