Question 1

Which of the following best describes the function of the hypothalamus in the endocrine system?

Accepted Answer

It acts as a connection between the nervous and endocrine systems, controlling the pituitary gland.

Question 2

A patient presents with symptoms of hyperthyroidism. Which feedback loop is most likely disrupted?

Accepted Answer

Negative feedback loop involving the hypothalamus, pituitary, and thyroid gland.

Question 3

Which layer of the adrenal gland is responsible for producing cortisol?

Accepted Answer

Adrenal cortex

Question 4

A blood sample shows a high percentage of eosinophils. What condition might this indicate?

Accepted Answer

Parasitic infection or allergic reaction

Question 5

Which of the following is TRUE regarding the histology of cardiac muscle tissue?

Accepted Answer

It contains striations and intercalated discs.

Question 6

A patient with type 1 diabetes mellitus is unable to produce which hormone, and from which organ?

Accepted Answer

Insulin from the pancreatic islets

Question 7

Which of the following blood cells is most abundant in a normal blood smear?

Accepted Answer

Neutrophils

Question 8

A person with blood type AB+ is considered a universal recipient. Which of the following explains why?

Accepted Answer

They have no anti-A, anti-B, or anti-Rh antibodies in their plasma.

Question 9

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

Accepted Answer

Tricuspid valve

Question 10

During ventricular systole, which part of the ECG corresponds to this phase?

Accepted Answer

$$QRS$$ complex

Question 11

Which vessel carries oxygenated blood from the lungs to the heart?

Accepted Answer

Pulmonary veins

Question 12

A patient has a blockage in the left anterior descending artery. Which area of the heart is most at risk?

Accepted Answer

Anterior wall of the left ventricle

Question 13

Which formula would you use to calculate cardiac output ($$CO$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 14

Which of the following is a structure found in veins but NOT in arteries?

Accepted Answer

Valves

Question 15

A patient with Cushing's syndrome is likely to have an excess of which hormone?

Accepted Answer

Cortisol

Question 16

Which pulse point is located on the lateral side of the wrist, proximal to the thumb?

Accepted Answer

Radial artery

Question 17

Which of the following best describes the function of the thymus?

Accepted Answer

It is important for immune function, especially T cell maturation.

Question 18

Which of the following is the correct pathway of blood through the heart, starting at the superior and inferior vena cava?

Accepted Answer

Right atrium → Right ventricle → Pulmonary trunk → Pulmonary arteries → Lungs → Pulmonary veins → Left atrium → Left ventricle → Aorta

Question 19

Which of the following arteries is a branch of the abdominal aorta that supplies the stomach?

Accepted Answer

Left gastric artery

Question 20

A patient with adrenal cortex adenocarcinoma is most likely to have abnormal levels of which hormone?

Accepted Answer

Cortisol

Comprehensive Study Notes: Endocrine System, Blood, Heart, and Circulatory Anatomy & Physiology

Study Guide - Practice Questions