FREE DAANCE Anatomy and Physiology Questions and Answers
Which artery located in the neck is palpated to assess pulse?
The common carotid artery is located on each side of the neck and is palpated to assess the pulse. This artery supplies blood to the head and neck regions. Palpating the common carotid artery allows healthcare providers to evaluate the strength and regularity of the pulse and provides information about the cardiovascular function and circulation in the upper body. Understanding the anatomy and function of the common carotid artery is essential for accurate pulse assessment and patient care management.
Blood is pumped to the lungs from the heart through which vessel?
The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation. This oxygenation process occurs in the pulmonary capillaries within the lungs, where carbon dioxide is exchanged for oxygen. Understanding the pathway of blood flow from the heart to the lungs via the pulmonary artery is essential in understanding pulmonary circulation and respiratory physiology.
What change in polarization does the T wave represent?
The T wave on an electrocardiogram (ECG or EKG) represents the electrical repolarization of the ventricles of the heart. This phase occurs as the ventricles prepare for the next contraction, following the initial depolarization represented by the QRS complex. Understanding the ECG waveform is crucial in assessing cardiac function and diagnosing abnormalities.
What are alveoli?
Alveoli are tiny air sacs within the lungs where the exchange of oxygen and carbon dioxide takes place between the air and the bloodstream. This exchange is essential for respiration and maintaining adequate oxygen levels in the body. Understanding the function and structure of alveoli is crucial in comprehending respiratory physiology and gas exchange mechanisms.
What change in polarization does the QRS complex represent?
The QRS complex on an electrocardiogram (ECG or EKG) represents the electrical depolarization of the ventricles of the heart. This rapid depolarization allows for the coordinated contraction of the ventricles, leading to the ejection of blood into the systemic circulation. Understanding the QRS complex is crucial in diagnosing and assessing various cardiac conditions related to ventricular depolarization abnormalities.
Which anatomical structure, located at the top of the larynx, closes the airway and prevents foreign bodies from entering the trachea?
The epiglottis is a flap-like structure located at the entrance of the larynx (voice box). During swallowing, the epiglottis folds down over the glottis (opening of the larynx), preventing food and liquids from entering the airway (trachea) and directing them into the esophagus instead. Understanding the role of the epiglottis is crucial in preventing aspiration during anesthesia and managing airway protection effectively.
What is the function of the epiglottis?
The epiglottis is a flap of cartilage located at the base of the tongue. During swallowing, it folds down to cover the opening of the larynx (glottis), directing food and liquids into the esophagus rather than the airway (trachea). This action helps prevent aspiration and ensures that food and liquids reach the stomach safely. Understanding the role of the epiglottis is critical in maintaining airway protection during swallowing and anesthesia administration.