Question 1

A patient presents with hyperglycemia, frequent urination, and excessive thirst. Laboratory tests reveal low insulin levels. Which endocrine disorder is most likely responsible for these symptoms?

Accepted Answer

Diabetes mellitus

Question 2

Which hormone is primarily responsible for stimulating gluconeogenesis in the liver during periods of fasting?

Accepted Answer

Cortisol

Question 3

A patient with Graves' disease is likely to exhibit which of the following symptoms due to excessive thyroid hormone production?

Accepted Answer

Weight loss and tachycardia

Question 4

Which of the following best describes the hypophyseal portal system?

Accepted Answer

A network of capillaries connecting the hypothalamus to the anterior pituitary

Question 5

Which of the following is a correct comparison between hormonal, neural, and humoral stimuli in hormone production?

Accepted Answer

Humoral stimuli involve changes in blood levels of ions or nutrients

Question 6

Which of the following blood components is primarily responsible for maintaining osmotic pressure in the blood?

Accepted Answer

Albumin

Question 7

A blood sample agglutinates with anti-A and anti-B sera but not with anti-D (Rh) serum. What is the blood type?

Accepted Answer

Type AB negative

Question 8

Which of the following best describes the function of hemoglobin in red blood cells?

Accepted Answer

It binds oxygen in the lungs and releases it in tissues

Question 9

Which of the following is a characteristic of leukemia?

Accepted Answer

Excessive production of abnormal white blood cells

Question 10

Which wave on an EKG corresponds to ventricular depolarization?

Accepted Answer

QRS complex

Question 11

Which heart valve prevents backflow of blood from the left ventricle to the left atrium?

Accepted Answer

Mitral (bicuspid) valve

Question 12

Which of the following correctly describes the pathway of blood flow from the right atrium to the aorta?

Accepted Answer

Right atrium → Right ventricle → Pulmonary artery → Lungs → Left atrium → Left ventricle → Aorta

Question 13

Which blood vessel type has the highest resistance and is most responsible for regulating blood pressure?

Accepted Answer

Arterioles

Question 14

Which of the following best describes the pathway of lymph from peripheral tissues to the bloodstream?

Accepted Answer

Lymphatic capillaries → Lymphatic vessels → Lymph nodes → Lymphatic trunks → Lymphatic ducts → Subclavian veins

Question 15

Which of the following is a primary lymphoid organ?

Accepted Answer

Thymus

Question 16

Which of the following is a component of innate immunity?

Accepted Answer

Neutrophils

Question 17

Which of the following best describes passive immunity?

Accepted Answer

Immunity acquired by receiving antibodies from another individual

Question 18

During inflammation, which is the correct sequence of events?

Accepted Answer

Vasodilation → Increased vascular permeability → Phagocyte migration

Question 19

Which immunoglobulin class is most abundant in plasma and is responsible for secondary immune responses?

Accepted Answer

IgG

Question 20

Which complement activation pathway is initiated by antibodies binding to antigens?

Accepted Answer

Classical pathway

AP217 Exam 1 Study Guidance: Endocrine, Blood, Heart, Blood Vessels, Lymphatic, and Immune System

Study Guide - Practice Questions

Study Guide - Flashcards