This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: If the SA node fails to fire and the AV junction becomes the heart's primary pacemaker, the rhythm ... (Read 76 times)

scienceeasy

  • Hero Member
  • *****
  • Posts: 565
on: Jul 3, 2018
If the SA node fails to fire and the AV junction becomes the heart's primary pacemaker, the rhythm depicted on the EKG is called:
 
  a. normal sinus.
  b. atrial fibrillation.
  c. premature junctional complex.
  d. junctional escape.

Question 2

When considering the damaging effects of radiation, which of the following should be considered?
 
  a. Alpha radiation is harmless and of no concern.
  b. Time, distance, and shielding will provide the basis for protection.
  c. Never approach a victim who has been exposed to gamma radiation as it is potentially lethal to the rescuer.
  d. There is no shielding currently available for the effects of gamma radiation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carlsona147

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 3, 2018
Answer to Question 1

D

Answer to Question 2

b
Rationale: a. Alpha radiation may present a significant risk of danger if ingested.
b. Correct.
c. A victim exposed generally causes no risk unless the source is nearby and emitting the radiation.
c. Lead is an effective shield against gamma radiation.


scienceeasy

  • Member
  • Posts: 565
Reply 2 on: Jul 3, 2018
YES! Correct, THANKS for helping me on my review

atrochim

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Tissues of the heart. Tissues of the heart.
fire truck fire truck
Toxoplasma gondii in the heart of an HIV patient. Toxoplasma gondii in the heart of an HIV patient.
Development of the Heart Development of the Heart
In amphibians, lizards, snakes, and turtles, the heart has three chambers: two atria and one ventric In amphibians, lizards, snakes, and turtles, the heart has three chambers: two atria and one ventric
The Primary Motor Cortex The Primary Motor Cortex
Video: DNA fingerprinting Animation

For a complete list of videos, visit our video library