BIO 201 Exam 3 | Score 125/125 | Straighterline

7/8/25, 5:05 PM Graded Exam 3
Topic 10: Nervous System I: Basic Structure & Function

Started on Tuesday, July 8, 2025, 5:44 PM
State Finished
Completed on Tuesday, July 8, 2025, 6:04 PM
Time taken 20 mins 15 secs
Grade 125.00 out of 125.00 (100%)




Question 1
What is a characteristic feature of both skeletal and cardiac muscles under a light mi
Correct

5.00 points out Select one:
of 5.00 a. Syncytium formation
b. Multinucleated structures
c. Striations in the cytoplasm
d. Uniform, non-striated appearance




Question 2
What controls the heart rate in cardiac muscle?
Correct

5.00 points out Select one:
of 5.00 a. Desmosomes
b. Sarcoplasmic reticulum
c. Pacemaker cells
d. Sarcolemma




Question 3
What is a Neuromuscular Junction?
Correct

5.00 points out Select one:
of 5.00 a. The space between two adjacent muscle fibers
b. The site where muscles attach to bones
c. The connection between a motor neuron and muscle fiber
d. A point of connection between two neurons in the brain




Question 4
What is the role of tendons in the movement of bones with the help of muscles?
Correct

5.00 points out Select one:
of 5.00 a. Tendons connect muscles to bones and transmit tension when muscles contra
b. Tendons provide nutrients to the muscles
c. Tendons contract to move bones
d. Tendons isolate muscles from the periosteum

, 7/8/25, 5:05 PM Graded Exam 3




Question 5
What criteria are used for classifying muscle fibers?
Correct

5.00 points out Select one:
of 5.00 a. Size of muscle fibers and fatigue resistance
b. Type of movement and energy requirement
c. Speed of contraction and ATP production method
d. Length of muscle fibers and color




Question 6
Which of the following is correct concerning different zones present in the muscle?
Correct

5.00 points out Select one:
of 5.00 a. Total length of sarcomere remains unchanged, as there is no change in the length of A zone
b. The A band is the sum of overlapping regions of myosin and non-overlapping H zone
c. The I band is represented by overlapping regions of the Actin filament
d. The A band is represented by only the overlapping region of the myosin with actin




Question 7
Which of the following is INCORRECT with respect to the triad?
Correct

5.00 points out Select one:
of 5.00 a. Spread of the muscle membrane potential along the T tubule is followed by contraction of the
muscle.
b. When muscle membrane potential reaches the T- tubule, it causes rapid pumping of the
Sodium ion from the sarcoplasm into the sarcoplasmic reticulum.
c. It brings the muscle membrane in close proximity to the sarcoplasmic reticulum.
d. It is composed of a T tubule, along with, two sarcoplasmic reticulums on either side of the T
tubule.




Question 8
What does the term “gluteus maximus” refer to?
Correct

5.00 points out Select one:
of 5.00 a. The longest muscle in the buttocks
b. The smallest muscle in the buttocks
c. The largest muscle in the buttocks
d. The medium-sized muscle in the buttocks




Question 9
Which muscle of the diaphragm allows the passage of the esophagus and associated nerves?
Correct

5.00 points out Select one:
of 5.00 a. Esophageal Hiatus
b. Caval Opening
c. Aortic Hiatus

d. Intercostal Muscles