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24 Cards in this Set
- Front
- Back
Which type of muscle cell has visible striations and many nuclei and is under voluntary control?
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Skeletal
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What attaches muscle to bone?
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Tendons
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Whole muscle is composed of bundles of muscle cells called?
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Fascicles
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The connective tissue covering of the whole muscle is called:
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Epimysium
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The plasma membrane of a muscle cell is called the:
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Sarcolemma
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The part of the sarcoplasmic reticulum where calcium ions are stored is called the:
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Terminal Cisternae
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The organelle that is a bundle of contractile elements is called a:
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Myofibril
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The arrangement of the thick and thin myofilaments foms light and dark bands along the myofibril. The length of the thick filament corresponds with which band?
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The A band
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The length of which band decreases as the muscle contracts?
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The I band.
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The functional unit of muscle contraction is called the:
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Sarcomere
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Epithelium that lines the GI tract:
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Simple columnar
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Epithelium that lines the esophagus:
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Stratified squamous
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Epithelium that lines the respiratory tract:
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Pseudostratified ciliated columnar
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Epithelium that forms air sacs in the lungs:
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Simple squamous
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Epithelium that lines the urinary tract:
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Transitional
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Epithelium that makes up endothelium and mesothelium:
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Simple squamous
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What does mesothelium line?
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Closed cavities.
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What tissue forms most of the body's glands?
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Epithelial tissue
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What does a G protein do?
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Relays signals from the extracellular First Messenger to the intracellular Second Messenger.
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Within cells, DNA is organized into long structures called:
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Chromosomes
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What are the primary bases in DNA and RNA?
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DNA-bases: TAGC
RNA-bases: UAGC U substitues for T in RNA |
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How do the DNA and RNA bases pair?
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DNA: A-T and G-C
RNA: A-U and G-C |
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How many types of RNA are there?
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All RNA is synthesized on DNA strands. There are three types:
Messenger (mRNA) Transfer (tRNA) Ribosomal (rRNA) |
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What are the two major periods of the cell cycle?
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Interphase and mitotic phase.
Interphase is when the cell grows and carries on its usual activities. Mitotic phase is when the cell divides into two cells. |