Q: Which of the following equations correctly represents the calculation of hematocrit percentage in a blood sample?

$$\text{Hematocrit} = \frac{\text{Volume of RBCs}}{\text{Total Blood Volume}} \times 100$$

Q: A patient has a blood pressure of 120/80 mmHg. Which equation best represents mean arterial pressure (MAP)?

$$\text{MAP} = \text{Diastolic Pressure} + \frac{1}{3}(\text{Systolic Pressure} - \text{Diastolic Pressure})$$

Q: A patient has a stroke volume of 70 mL and a heart rate of 75 beats per minute. What is their cardiac output?

$$CO = 70 \times 75 = 5250 \text{ mL/min}$$

Question 1

Which of the following best describes the function of the spinal cord in the central nervous system?

Accepted Answer

It serves as a relay center for signals between the brain and peripheral nerves, and mediates reflexes.

Question 2

A patient presents with loss of sensation in the right arm and difficulty moving it. Which region of the spinal cord is most likely affected?

Accepted Answer

Cervical region

Question 3

Which cranial nerve is responsible for transmitting visual information from the eye to the brain?

Accepted Answer

Optic nerve (II)

Question 4

During a lab dissection of the brain, you observe the corpus callosum. What is its primary function?

Accepted Answer

To connect the left and right cerebral hemispheres and facilitate communication between them

Question 5

Which division of the autonomic nervous system is responsible for the 'fight or flight' response?

Accepted Answer

Sympathetic nervous system

Question 6

A person experiences increased heart rate, dilated pupils, and decreased digestive activity. Which neurotransmitter is most likely involved in this response?

Accepted Answer

Norepinephrine

Question 7

Which of the following is a correct pathway for light entering the eye?

Accepted Answer

Cornea → Lens → Retina → Optic nerve

Question 8

A patient is unable to hear high-frequency sounds. Which structure in the ear is most likely damaged?

Accepted Answer

Basilar membrane near the oval window

Question 9

Which hormone is secreted by the adrenal medulla and is involved in the acute stress response?

Accepted Answer

Epinephrine

Question 10

A patient with diabetes insipidus has a deficiency in which hormone?

Accepted Answer

Antidiuretic hormone (ADH)

Question 11

Which of the following equations correctly represents the calculation of hematocrit percentage in a blood sample?

Accepted Answer

$$	ext{Hematocrit} = \frac{	ext{Volume of RBCs}}{	ext{Total Blood Volume}} 	imes 100$$

Question 12

A patient has a blood pressure of 120/80 mmHg. Which equation best represents mean arterial pressure (MAP)?

Accepted Answer

$$	ext{MAP} = 	ext{Diastolic Pressure} + \frac{1}{3}(	ext{Systolic Pressure} - 	ext{Diastolic Pressure})$$

Question 13

Which of the following best describes the function of the sinoatrial (SA) node in the heart?

Accepted Answer

It initiates electrical impulses that set the pace for the heart rate.

Question 14

A patient is diagnosed with anemia. Which of the following lab values would most likely be decreased?

Accepted Answer

Hematocrit

Question 15

Which equation correctly represents cardiac output ($$CO) in $$terms of heart rate ($$HR) $$and stroke volume ($$SV$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 16

A patient has a stroke volume of 70 mL and a heart rate of 75 beats per minute. What is their cardiac output?

Accepted Answer

$$CO = 70 	imes 75 = 5250 	ext{ mL/min}$$

Question 17

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

Accepted Answer

Pulmonary vein

Question 18

A patient with hyperthyroidism is likely to have elevated levels of which hormone?

Accepted Answer

Thyroxine (T4)

Question 19

Which of the following best explains why the left ventricle has a thicker wall than the right ventricle?

Accepted Answer

It pumps blood to the entire body, requiring greater force.

Question 20

A patient is experiencing excessive thirst and urination. Blood tests reveal high blood glucose levels. Which endocrine disorder is most likely present?

Accepted Answer

Diabetes mellitus

BI232 Summer Course Outline: Nervous, Endocrine, and Cardiovascular Systems

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