The presence of ferromagnetic objects in the body or in the CT scanning room can pose a safety hazard for those having a CT scan.
Answer the following statement true (T) or false (F)
False
Rationale: The presence of ferromagnetic objects in the body or in the CT scanning room does not pose a safety hazard for those having a CT scan.
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Which statement about CSF is correct?
a. It is produced in the brain and spinal cord. b. It is produced by meningeal cells. c. It provides for exchange of materials between the blood and brain interstitial fluid. d. It flows between the pia mater and the brain's surface. e. It does not flow through the meningeal layers.
In the resting state of the membrane, which of the following situations exists for voltage-gated sodium ion channels?
A) The activation and inactivation gates alternate between being closed and open. B) The inactivation gate is open and the activation gate is closed C) The activation and inactivation gates are both closed. D) The activation gate is open and the inactivation gate is closed.
In the process of apoptosis, cells shrink and die but the basic structure of the organelles remains constant
a. true b. false
Which of the following functional groups is the phosphate group?
A) -NH2 B) -PO4 C) -COOH D) -SH E) -OH