Which of the following is not true of saliva?
A) cleanses the mouth
B) contains enzymes that begin the breakdown of proteins
C) moistens food and aids in compacting of the bolus
D) dissolves food chemicals so they can be tasted
B) contains enzymes that begin the breakdown of proteins
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The medial wall of the orbit is formed by the
A. maxillary and zygomatic bones. B. ethmoid and lacrimal bones. C. zygomatic and sphenoid bones. D. frontal bone.
Asthma is a respiratory disorder characterized by construction of airways and mucus production which makes it very difficult to breathe. The constriction of airways, mucus production and altered gene expression in the cells lining the airways of asthmatics is due to increased release of neurotransmitter acetylcholine. Explain how a single molecule can have such a large and diverse effect in a
single cell. What will be an ideal response?
The expansible portion of an atrium is called a(n) ________ because it reminded early anatomists of the external ear.
A) atrial sinus B) coronary sulcus C) atrial apex D) interatrial groove E) auricle
________ are soluble inorganic compounds whose solutions will conduct an electric current
A) Proteins B) Lipids C) Ions D) Electrolytes E) Enzymes