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Cardiovascular and Endocrine System: BIO 254 Lab 2024 Questions & Answers, Exams of Biology

Jackson CollegeBiology

A comprehensive set of questions and answers related to the cardiovascular and endocrine systems, covering topics such as the location of the cardiovascular center, the flow of deoxygenated blood, the layers of the pericardium, the effects of chordae tendineae degradation, the role of the anterior pituitary, the sequence of excitation in the heart, the functions of the right and left sides of the heart, hormone secretion, and various other aspects of the cardiovascular and endocrine systems. A study guide or reference material for a bio 254 lab course in 2024, providing verified and correct answers to the questions. The level of detail and the range of topics covered suggest that this document could be a valuable resource for university students studying these systems, particularly in the context of a biology or physiology course.

Typology: Exams

2023/2024

Available from 08/25/2024

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BIO 254 LAB 2024 Questions & Answers
| 100% Correct | Verified
The cardiovascular center is located - ✔✔medulla oblongata
All deoxygenated blood returning from the systemic circulation flows into the: - ✔✔Right Atrium
Which of the following layers of the pericardium is the dense connective tissue structure that plays an
important role in protecting the heart and keeping it in place in the mediastinum? - ✔✔Fibrous
pericardium
Degradation of the chordae tendineae would most likely result in - ✔✔Valvular Prolapse (valve fails to
close properly)
Max, a 16 year old, has grown 14 inches taller than his identical twin brother this year. What organ or
organ region do you suspect may not be functioning properly? - ✔✔Anterior Pituitary
The correct order of sequence of structures that allows the normal sequence of excitation to progress
through the heart - ✔✔SA Node, AV node, Bundle of HIS, Bundle Branches, Purkinje fibers.
The right side of the heart plays a role in ______________, while the left side of the heart plays a role in
____________. - ✔✔Pulmonary circulation; systematic circulation
Which of the following hormones stimulates cells of the anterior pituitary to secrete FSH and LH? -
✔✔GnRH- Gonadotropin-releasing hormone
Daniel is a 24 year old male, admitted to the hospital with symptoms similar to osteoporosis. Hyper-
secretion of which of the following hormones might be the cause for his condition? - ✔✔Parathyroid
Hormone
Sara's MAP is - ✔✔109mmHg
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Download Cardiovascular and Endocrine System: BIO 254 Lab 2024 Questions & Answers and more Exams Biology in PDF only on Docsity!

BIO 254 LAB 2024 Questions & Answers

| 100% Correct | Verified

The cardiovascular center is located - ✔✔medulla oblongata All deoxygenated blood returning from the systemic circulation flows into the: - ✔✔Right Atrium Which of the following layers of the pericardium is the dense connective tissue structure that plays an important role in protecting the heart and keeping it in place in the mediastinum? - ✔✔Fibrous pericardium Degradation of the chordae tendineae would most likely result in - ✔✔Valvular Prolapse (valve fails to close properly) Max, a 16 year old, has grown 14 inches taller than his identical twin brother this year. What organ or organ region do you suspect may not be functioning properly? - ✔✔Anterior Pituitary The correct order of sequence of structures that allows the normal sequence of excitation to progress through the heart - ✔✔SA Node, AV node, Bundle of HIS, Bundle Branches, Purkinje fibers. The right side of the heart plays a role in ______________, while the left side of the heart plays a role in ____________. - ✔✔Pulmonary circulation; systematic circulation Which of the following hormones stimulates cells of the anterior pituitary to secrete FSH and LH? - ✔✔GnRH- Gonadotropin-releasing hormone Daniel is a 24 year old male, admitted to the hospital with symptoms similar to osteoporosis. Hyper- secretion of which of the following hormones might be the cause for his condition? - ✔✔Parathyroid Hormone Sara's MAP is - ✔✔109mmHg

Which of the following statements about cardiac output is NOT CORRECT? - ✔✔Parasympathetic nerve stimulation will increase the heart rate and thus increases the cardiac output. The S-T segment of an ECG represents - ✔✔The plateau phase of the myocardial action potential. Bradycardia is defined as - ✔✔slower than normal heart rate How many hormones do the five types of anterior pituitary cells secrete? - ✔✔ 7 Localized weakening of the blood vessel wall causing the side of the vessel to bulge is - ✔✔an aneurysm A feature of cardiac muscle that joins adjacent cells together is - ✔✔intercalated discs After performing the Allen's test, it is observed that only the first three digits regain normal color when the radial artery is uncompressed while the lunar artery is still occluded - ✔✔This means there is an anastomosis between the radial and the ulnar artery What is an example of an anastomosis - ✔✔Circle of Willis An increase in the formation of glycogen by the liver is an important effect of - ✔✔Insulin Which two numbers are used to determine pulse pressure? - ✔✔Systolic and Diastolic Pressure Which of the following would result from a thyroidectomy (removal of the thyroid gland) - ✔✔Decreased T3 and T4 secretion/ Decreased calcitonin secretion Which of the following is NOT true of veins? - ✔✔They always contain blood with a lower oxygen content.

E) ALL OF THE ABOVE ARE CORRECT (THIS IS THE ANSWER)

The Thyroid gland - ✔✔helps regulate metabolism and Ca2+ levels Andrea has a tumor in her pituitary gland disrupting normal functioning of Somatotrophs cells. Which of the following hormones would likely be affected? - ✔✔hGH Vasodilation ________ Total Peripheral Resistance - ✔✔Decreases Which artery wall is responsible for vasoconstriction? - ✔✔Tunica Interna Because of the effect aldosterone has on blood volume and urine contents, which of the following are also likely additional effects that reinforce this hormones primary actions? - ✔✔Stimulation of the thirst center in the hypothalamus and cravings for, and increased ingestion of salty foods. Deoxygenated blood in normal adults may be found in all of the following regions EXCEPT - ✔✔Pulmonary Veins Changes in blood pressure are detected by - ✔✔Baroreceptors Within the blood vessels, valves are found in the - ✔✔Veins On a normal ECG/EKG, atrial repolarization occurs during the - ✔✔QRS complex Depolarization of heart contractile cells is primarily initiated by which ion entering the cell membrane? - ✔✔Ca++ The primary target for glucagon is the - ✔✔Liver Which of the following hormones is/are mismatched with its target organs? - ✔✔EPO- Kidney

The P wave of an ECG represents - ✔✔atrial depolarization Choose a statement about steroid hormones that is correct - ✔✔Can pass through through their target cell membrane and interact with receptors in the nucleus. Which of the following anterior pituitary hormones stimulates milk production? - ✔✔Prolactin Which of the following mechanisms helps blood in veins get from the tips of the toes back to the heart - ✔✔Skeletal Muscle pump Which valve below prevents blood from flowing back into the right ventricle? - ✔✔Tricuspid Valve Which of the following would not increase blood pressure? - ✔✔Decreased cardiac output