Why do inflamed tissues appear red, swollen, and warm?
What will be an ideal response?
Affected cells release histamine, which makes capillaries leaky and dilates arterioles, causing increased blood flow. This causes redness (from increased blood flow), warmth, and swelling.
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Match the skeletal muscle protein on the left with its function on the right.
A) myosin-binding protein at M line B) binds along the length of thin filaments C) major protein of sarcoplasmic reticulum D) attaches actin filaments to Z line E) mediates calcium regulation of contraction F) attaches actin to Z line G) links thick filaments to Z line H) major component of thin filaments I) major component of thick filaments J) links thin filament to Z line 1) actin 2) myosin 3) tropomyosin 4) troponin 5) titin 6) nebulin 7) myomesin 8) ?-actinin 9) Ca2+ ATPase 10) CapZ
Smooth muscle and striated muscle have distinct mRNA forms for some genes due to ____
a. aminoacylation b. alternative splicing c. polyadenylation d. degeneracy e. exon shuffling
Which of the following is NOT involved in some
way in the body’s first line of defense? a. urination b. diarrhea c. gastric juice d. complement e. ciliated cells
The European Neanderthals were replaced about 34,000 years ago by
A. Homo erectus. B. Homo heidelbergensis. C. Neanderthals. D. Homo habilis. E. Cro-Magnons.