The plasma membrane allows nutrients to enter the cell and keeps undesirable substances out of the cell. It also allows wastes to pass out of the cell and keeps valuable cell proteins inside the cell. This property is called ________
A) resistive permeability B) selective permeability
C) checking and balancing D) impermeability
Answer: B
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Answer the following statements true (T) or false (F)
1. Systemic circulation begins in the left ventricle or aorta and ends in the vena cava or right atrium. 2. Pulmonary circulation begins in the pulmonary artery or right ventricle and ends in the pulmonary vein or right atrium. 3. The hepatic portal vein connects the blood leaving the liver to the inferior vena cava. 4. The hepatic portal system sends blood through two sets of capillary beds rather than the usual one set of capillaries. 5. One function of the hepatic portal system is to help maintain glucose homeostasis in the blood.
A(n) ________ consists of a combination of a weak acid and its dissociation products.
Fill in the blank(s) with the appropriate word(s).
Prior to immobilizing an anxious patient with a suspected spinal injury on a backboard, it is important to:
A) ask the patient to pull against your hands with his or her feet. B) make note of any neurologic deficits or gross injuries up to that point. C) administer the appropriate dose of a sedative to facilitate patient compliance. D) apply a cervical collar to free up the medic that is holding the patient's head.
Where are the submandibular salivary glands?
A. Below the tongue B. Inferior to the angle of the mandible on each side C. Anterior to the ears D. None of these are correct.