Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
A&P II Lab
Chapter 31
| Question | Answer |
|---|---|
| Cardiac muscle cells are electrically connected by gap junctions and behave as a single unit? | True |
| Because it sets the rate of depolarization for the normal heart, the ______ node is known as the pacemaker of the heart. | Sinoatrial or (SA Node) |
| Activity of the nerves of the autonomic nervous system is essential for cardiac muscle to contract. | False |
| Today you will create a graphic recording of the electrical changes that occur during a cardiac cycle. This known as an | Electrocardiogram |
| The typical ECG has three/six normally recongnizable deflection waves. | Has Three |
| In a typical ECG, the __________ wave signals the depolarization of the atria immediately before the contract. | P wave |
| The repolarization of the atria is usually masked by the large QRS complex? | True |
| A Heat rate over 100 beats/minute is known as | Tachycardia |
| How many electodes will you place on your subject for today's activity if using a standard ECG apparatus? | 4 |
| Electrical activity recorded by any lead depends on the location and orientation of the rocording electrodes. | True |
| A rate below 60 Beats/minutes | Brandycardia |
| prolonged tachycardia | Fibrillation |
| ECG is a record of | Voltage and time |
| List the elements ofthe intrinsic conduction stystem in order. | SA Node>>>AV Node>>>A Bundle>>>Bundle Branches>>> Purkinje Fibers |
| Define ECG | the graphic recording of the electrical changes( Depolarization followed by Repolarization) Occuring during the cardiac cycle. |
| Which Node is often refferd to as the pacemaker? | Sa Node |
| At what structure in the transmission sequence is the impulse temporarily delayed? | AV Node This delay is important because it ensures that the atria have ejected their blood into the ventricles first before the ventricles contract/ |
| Immediately before the P wave | Heart is in diastole |
| During the wave | Depolarization of atria |
| P-R interval | represents the time between the beginning of atrial depolarization and ventricular depolarization |
| Q-T interval | is the period from the beginning of ventricular deposarization through repolarization includes the time of ventricular contraction |
| Exercisse 32 anatomy of blood vessels | |
| List the elements of the intrinsic conduction stystem in order starting with the SA Node | SA NOde>>>Av Node>>> AV Bundles>>>Bundle Branches>>Purkinje Fibers |
| Define ECG | the graphic recording of the electrical changes (Depolarization followed by repplarization) occuring during the ccardiac cycle. |
| At what structure in the transmission sequence is the impulse temporarily delayed | AV Node this delay is important because it ensures that the atria have ejected their blood into the ventricles first before the ventricles contract. |
| Immediately before the P wave | Heart is in diastole |
| During the P wave | Depolarization of atria |
| P-R interval | Represents the time between the beginning of atrial depolaratztion and ventricular depolarization |
| P-R interal | 0.16 to 0.18 a longer interval lmay suggest a partial AV heart block caused by damage to the AV node. |
| Q-T Interval | is the period from the veginning of ventricular depolarization through replarization and includes the time of ventricular contractions |
| Lab 32 Anatomy of Blod Vessels | |
| Which arteries/veins drain tissues and return blood to the heart | Arteries |
| It is through the walls of capillaries that actual gas exchange takes place between tissue cells and blood | True |
| The ______ is the largest artery of the body | Aorta |
| The largest branch of the abdominal aorta, the __________artery, supplies most of the small intestine and the first half of the large intestine | Superior mesenteric |
| The anterior tibial artery terminates with the _______ artery, which is oftern palpated in patients with circulatory problems to determine the circulatory efficiency of the lower limb | The dorsalis pedis artery |
| Veins draining the head and upper extremities empty into the | Superior vena cava |
| Located in the lower limb, the ________is the longest vein in the body | Great Saphenous |
| The ______ veins drain the liver | hepatic vein |
| The function of the _________is to drain the digestive viscera and carry dissolved nutrients to the liver for processing | Hepatic portal circulation |
| In the developing fetus, the umbilibal ____ carries blood rich in nutrients and oxygen to the fetus. | Vein |
Created by:
linlew