What will each of the following do to smooth muscle contraction in the digestive system?
Added by Remedios K.
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These include neurotransmitters, hormones, and local factors such as stretch and chemical composition of the contents in the digestive tract. Show more…
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Most digestive organs receive both parasympathetic and sympathetic innervation. Classify each effect on the digestive system as deriving from either sympathetic or parasympathetic innervation.
Adi S.
Drag the appropriate labels to their respective targets. Certain cells increase secretions Dilation of bronchioles Secretion decrease Release of epinephrine and norepinephrine Rate and force of contraction increase Dilation of blood vessels Dilation of pupil Digestive and urinary tracts relax, sphincters constrict Increase in release of glucose Increase in secretion Vasoconstriction TARGET NT RECEPTOR MAIN EFFECTS Eye Smooth muscle cells around pupil NE a1 Salivary glands Cells of salivary glands NE B1 and B2 Heart Cardiac muscle cells NE B1 Lung Bronchus Smooth muscle cells of bronchus NE B2 Sweat gland Cells of sweat glands ACh Muscarinic Blood vessels Smooth muscle cells of blood vessels to skin NE a1 Smooth muscle cells of blood vessels to skeletal muscles NE B2 Smooth muscle cells of blood vessels to digestive and urinary organs NE a1 Liver Stomach Pancreas Large intestine Small intestine Rectum Smooth muscle cells of digestive and urinary tracts and sphincters NE a1 (sphincters) B3 (digestive) B2 (urinary) Cells of digestive glands NE B2 Cells of pancreas and liver NE B2 Urinary bladder Cells of adrenal medulla ACh Nicotinic
Sri K.
Determine whether each example involves muscarinic, nicotinic, or adrenergic receptors. Receptors on neuron cell bodies in terminal ganglia. Receptors on smooth muscle of iris that bind acetylcholine. Receptors on neuron cell bodies in the sympathetic chain ganglia. Receptors on the heart that bind acetylcholine. Receptors on cells of an apocrine sweat gland. Receptors on cells of air passageways that bind norepinephrine. Receptors that initiate contraction of smooth muscle in the urinary bladder wall. Receptors that initiate a decrease in muscle tone of the stomach wall. Muscarinic. Nicotinic. Adrenergic.
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