Question 1

Which structure connects the two cerebral hemispheres and allows communication between them?

Accepted Answer

Corpus callosum

Question 2

A patient suffers a stroke that damages the precentral gyrus of the frontal lobe. Which function is most likely to be impaired?

Accepted Answer

Motor control of voluntary muscles

Question 3

Which muscle is responsible for flexing the forearm at the elbow and has its origin at the scapula and insertion at the radial tuberosity?

Accepted Answer

Biceps brachii

Question 4

On a microscope slide of cardiac muscle, which feature distinguishes it from skeletal muscle?

Accepted Answer

Intercalated discs

Question 5

A lesion in the optic chiasm would most likely affect which function?

Accepted Answer

Visual field processing

Question 6

Which of the following best describes the function of the sternocleidomastoid muscle?

Accepted Answer

Flexes and rotates the head

Question 7

Which structure in the spinal cord contains motor neuron cell bodies and is located anteriorly?

Accepted Answer

Anterior gray horn

Question 8

A person is unable to abduct their arm at the shoulder. Which muscle is most likely damaged?

Accepted Answer

Deltoid

Question 9

Which of the following is NOT a function of neuroglia in nervous tissue?

Accepted Answer

Transmitting electrical impulses

Question 10

A cross-section of the spinal cord reveals a butterfly-shaped region. What is this region primarily composed of?

Accepted Answer

Gray matter

Question 11

Which muscle is primarily responsible for plantar flexion of the foot and attaches to the calcaneus via the Achilles tendon?

Accepted Answer

Gastrocnemius

Question 12

Which part of the neuron receives incoming signals from other neurons?

Accepted Answer

Dendrite

Question 13

A patient presents with difficulty hearing and balance issues. Which structure is most likely affected?

Accepted Answer

Organ of Corti

Question 14

Which of the following best describes the function of the masseter muscle?

Accepted Answer

Elevates the mandible to close the jaw

Question 15

Which structure in the cow eye is responsible for reflecting light and improving night vision?

Accepted Answer

Tapetum lucidum

Question 16

Which muscle group is located on the posterior thigh and is involved in knee flexion?

Accepted Answer

Hamstrings

Question 17

Which of the following best describes the function of the pectoralis major muscle?

Accepted Answer

Flexes, adducts, and medially rotates the arm

Question 18

A patient has a lesion affecting the lateral funiculus of the spinal cord. Which function is most likely to be impaired?

Accepted Answer

Transmission of motor and sensory information

Question 19

Which of the following is a connective tissue structure, not a muscle, found in the midline of the abdomen?

Accepted Answer

Linea alba

Question 20

A person is unable to dorsiflex their foot after an injury. Which muscle is most likely damaged?

Accepted Answer

Tibialis anterior

BIOL2010 Lab Exam 2 Study Guidance: Models, Structures, and Identification

Study Guide - Practice Questions