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c&t2

QuestionAnswer
The embryonic precursor for connective tissue is called mesenchyme
The most common fixed cell of connective tissue is the fibroblast
Which of the following has the most densly concentrated fibers in the extracellular matrix? A. areolar B. reticular C. adipose D. dense irregular B. reticular
What is the major difference between dense irregular and dense regular connective tissue? The arrangement of the fibers in the matrix
What kinf od cartilage is found in the annulus fibrosae of the IVD? hyaline
Is elastic cartilage surrounded by a perichondrium? Nope, hyaline and fibrocartilge
Which of the following forms most of the embryonic mesoderm? Hyaline cartilage, Elastic cartilage, or fibrocartilage Fibrocartilage
The Nissl substance of the neuronal cell bodies is actually aggrigates of what cellular organelle? Golgi
Most neurons form which type of synapse? Chemical
What contributes to the blood-brain barrier? astrocytes
Myelin is produced by oligodendrocytes? (T/F) False
In striated muscle, T tubules are extensions of... The plasma membrane
Sarcomeres are found in all types of muscle? (T/F) False
Which muscle is able to normally divide in the adult? Skeletal muscle
The cardiac muscle us concentrated in the area of the heart around the valves? (T/F) False
Where are cardiac cells concentrated? In the myocardium
The thickest layer of the wall of the artery is the... Tunica media
Which type of capillary is the most widespread? Fenestrated
What is another name for a very large glycosaminoglycan? Hyaluronate
Which glycosaminoglycans is associated with reticular fibers? Heparin sulfate
Glue like molecules of teh extracellura matrix have single binding sites for one component in the ECM. One glue molecule binds to one component like a fiber or a glycosaminoglycan, but never both. (T/F) True
In collagen biosynthesis, which amino acid has hydroxyl groups added? Proline
The tendency of a substance to move from an area of high concentration to an area of lower concentration is called...? Diffusion
Paricals of a susbstance dissolved in either a liquid or a gas solvent are in continuous random motion. This is the defintion of...? Brownian movement
What gated channels are opened at threshold potential during the generation of an action potential? voltage gated Na++ channels
Sodium ions flow easily through potassium voltage gated channels. (T/F) False
Non-myelinated axon processes have action potentials that move along the entire length of the axon? (T/F) False
Which synapse relies on gap junctions? Electrical synapses
The axoplasmic flow from the cell body towards teh synaptic knob is called...? Anterograde
Retrograde Axoplasmic flow back toward soma
Inhibitory neurotranmitters cause...? Hyperpolarization
Adreniergic synapses utiliza ligand gates which are activated by...? Acetylcholine
Enzymes that degrade the neurotransmitters epinephrine and norepinephrine are ...? acetycholinesterase
What are the two types of macroglial cells? Oligodendrocytes and astrocytes
Which glial cell is most numerous? Astrocytes
The signal to release neurotransmitters involves the passage of the action potential across the synaptic knob which triggers and influx of ____ into the knob. Calcium
The combination of _______ and _______ cover the myosin binding sites in microfilaments of resting muscle. Troponin complex and tropomyosin
What is the yield of ATP per glucose passing through the glycolytic path in skeletal muscle, during anaerobic conditions? 2 ATP
In the signal to contract, what does calcium first bind to before activation of myosin light chain kinase? Troponin C
Where is the calcium +2 ATPase pump in skeletal muscle myofibrils? Sarcoplasmic reticulum membrane
What type of port does the Calcium ATPase have? uniport
The logitudinal region of an intercalated disk found in the cardiac muscle contains...? Gap Junctions
Which enzyme in our circulatory system helps to transport CO2 from tissues and out thrrought the lungs? carbonic anhydrase
Created by: chrey23
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