Proteins within the cell wall allow the passage of several substances into and out of the cell. What is one of these substances?
A) Calcium
B) Phosphorous
C) Magnesium
D) Manganese
A
Feedback:
Channels or pores within the cell membrane are made by proteins in the cell wall that allow the passage of small substances in or out of the cell. Specific channels have been identified for sodium, potassium, calcium, chloride, bicarbonate, and water; other channels may also exist. Some drugs are designed to affect certain channels specifically. For example, calcium channel blockers prevent the movement of calcium into a cell through calcium channels. Options B, C, and D are not known to have their own channels at this time.
You might also like to view...
The 17-year-old single mother of a 2-month-old infant comes to the clinic and tells the nurse, "Sometimes no matter what I do my baby won't stop crying. I hold him up in the air and shake him until he stops
" Based on these statements by the mother, what is the first action by the nurse? a. Teach the mother about the dangers of shaking a baby b. Report child abuse to the appropriate authorities c. Teach the mother other methods to stop the baby from crying d. Encourage the mother to obtain more support from a significant other
The client is given an injection of an antibiotic. Shortly afterward, she says that she has hives and is itchy. The nurse administers an antihistamine to counteract the effect of the antibiotic
Which one of the following intervention methods is the nurse using? a. Physical care techniques b. Assisting with activities of daily living (ADLs) c. Preparing for special procedures d. Controlling for adverse reactions
A patient who is 5 feet 9 inches tall and weighs 160 pounds believes that her size-9 feet are enormous compared with the rest of her body
She has visited orthopedic surgeons to see if surgery could reduce the length of her feet, and she spends hours trying to buy shoes that make her feet look smaller. In social situations, she sits with her feet concealed under a table or wears long skirts to hide them. The nurse can assess that the patient's symptoms are consistent with: a. hypochondriasis. b. somatoform pain disorder. c. body dysmorphic disorder. d. depersonalization disorder.
A community hospital is considering implementing an electronic health record (EHR). Which is considered an impediment to the development and implementation of this electronic communication? Select all that apply.
A) Cost B) Confidentiality C) Information system vendors D) Lack of a common vocabulary E) Development of an electronic infrastructure