Q: Which of the following equations correctly represents the net ATP yield from glycolysis during anaerobic metabolism?

$$\text{Glucose} + 2\text{ADP} + 2\text{P}_i \rightarrow 2\text{Pyruvate} + 2\text{ATP} + 2\text{H}_2\text{O}$$

Q: Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in blood?

$$\text{Hb} + 4\text{O}_2 \rightarrow \text{Hb}(\text{O}_2)_4$$

Question 1

Which structural feature is responsible for the striated appearance of skeletal and cardiac muscle tissue, but is absent in smooth muscle?

Accepted Answer

Presence of sarcomeres with alternating A and I bands

Question 2

During muscle contraction, which sequence correctly describes the events from nerve impulse to actin-myosin interaction?

Accepted Answer

Acetylcholine release → sarcolemma depolarization → action potential travels down T tubules → calcium release from terminal cisternae → calcium binds troponin → tropomyosin exposes actin binding site → myosin forms cross bridge

Question 3

A patient is diagnosed with muscle atrophy. Which of the following best describes this condition?

Accepted Answer

Decrease in muscle size due to loss of myofibrils

Question 4

Which of the following equations correctly represents the net ATP yield from glycolysis during anaerobic metabolism?

Accepted Answer

$$	ext{Glucose} + 2	ext{ADP} + 2	ext{P}_i ightarrow 2	ext{Pyruvate} + 2	ext{ATP} + 2	ext{H}_2	ext{O}$$

Question 5

Which neuroglial cell is responsible for forming the myelin sheath in the central nervous system (CNS)?

Accepted Answer

Oligodendrocyte

Question 6

A person touches a hot stove and quickly withdraws their hand. Which type of neuron is primarily responsible for carrying the sensory information from the hand to the spinal cord?

Accepted Answer

Afferent neuron

Question 7

Which of the following best describes the difference between the autonomic and somatic nervous systems?

Accepted Answer

The autonomic nervous system controls involuntary functions, while the somatic nervous system controls voluntary movements.

Question 8

Which sensory receptor is most likely to be activated when a person experiences a change in blood pressure?

Accepted Answer

Baroreceptor

Question 9

A patient presents with myopia. Which of the following best describes this condition?

Accepted Answer

Light focuses in front of the retina, causing difficulty seeing distant objects.

Question 10

Which hormone is released by the adrenal cortex and is primarily responsible for regulating sodium and potassium balance?

Accepted Answer

Aldosterone

Question 11

Which of the following statements best explains the mechanism of action for hydrophobic hormones?

Accepted Answer

They diffuse through the cell membrane and bind to intracellular receptors, affecting gene transcription.

Question 12

Which hormone increases blood glucose levels by stimulating the breakdown of glycogen in the liver?

Accepted Answer

Glucagon

Question 13

Which of the following equations correctly represents the oxygen-carrying capacity of hemoglobin in blood?

Accepted Answer

$$	ext{Hb} + 4	ext{O}_2 ightarrow 	ext{Hb}(	ext{O}_2)_4$$

Question 14

A patient with sickle cell anemia is at increased risk for which of the following complications?

Accepted Answer

Blocked blood vessels due to abnormally shaped red blood cells

Question 15

Which of the following best describes the process of hemostasis?

Accepted Answer

The sequence of events that stops bleeding, including vascular spasm, platelet plug formation, and coagulation

Question 16

Which of the following is a correct pairing of hormone and its primary target tissue?

Accepted Answer

TSH – Thyroid gland

Question 17

Which of the following best describes the difference between the nervous system and the endocrine system?

Accepted Answer

The nervous system uses electrical impulses for rapid communication, while the endocrine system uses hormones for slower, longer-lasting effects.

Question 18

Which of the following best describes the function of the sarcoplasmic reticulum in muscle cells?

Accepted Answer

Stores and releases calcium ions necessary for muscle contraction

Question 19

A person with type AB blood receives a transfusion of type O blood. Which of the following best describes the compatibility?

Accepted Answer

Type O blood can be safely transfused to a person with type AB blood because type O lacks A and B antigens.

Muscle, Nervous, Endocrine Systems, and Blood: Study Guide for Anatomy & Physiology

Guida di studio - Domande di pratica

Study guide - Flashcard