Question 1

Which of the following muscle types is characterized by the presence of intercalated discs and is responsible for involuntary rhythmic contractions in the heart?

Accepted Answer

Cardiac muscle

Question 2

A patient presents with difficulty flexing their forearm. Which muscle is most likely impaired?

Accepted Answer

Biceps brachii

Question 3

Which protein directly blocks the myosin binding sites on actin in a relaxed skeletal muscle fiber?

Accepted Answer

Tropomyosin

Question 4

During a reflex arc, which structure is responsible for transmitting the impulse from the sensory neuron to the motor neuron within the spinal cord?

Accepted Answer

Interneuron

Question 5

Which of the following correctly matches a brain structure with its primary function?

Accepted Answer

Frontal lobe – voluntary motor control

Question 6

If the ventral root of the spinal cord is damaged, which function is most likely to be affected?

Accepted Answer

Motor output to muscles

Question 7

Which equation best represents the relationship between force ($$F$$), mass ($$m$$), and acceleration ($$a) $$during a muscle contraction?

Accepted Answer

$$F = m 	imes a$$

Question 8

A lesion in the precentral gyrus would most likely result in which clinical symptom?

Accepted Answer

Impaired voluntary movement

Question 9

Which of the following structures is NOT part of the sarcomere?

Accepted Answer

Nissl substance

Question 10

Which muscle is responsible for extension of the knee joint?

Accepted Answer

Vastus lateralis

Question 11

A patient has lost the ability to abduct their arm at the shoulder. Which muscle is most likely damaged?

Accepted Answer

Deltoid

Question 12

Which of the following best describes the function of the corpus callosum?

Accepted Answer

Connects the two cerebral hemispheres

Question 13

Which sensory receptor is specialized for detecting light touch?

Accepted Answer

Tactile (Meissner's) corpuscle

Question 14

Which structure in the neuron is primarily responsible for receiving synaptic inputs?

Accepted Answer

Dendrite

Question 15

Which equation describes the calculation of the resting membrane potential ($$V_m) $$using the Nernst equation for potassium ions ($$K^+$$)?

Accepted Answer

$$V_m = \frac{RT}{zF} \ln \left( \frac{[K^+]_{out}}{[K^+]_{in}} \right)$$

Question 16

Damage to which part of the spinal cord would most likely result in loss of sensation from the lower limbs?

Accepted Answer

Dorsal column

Question 17

Which muscle is part of the quadriceps group and is located on the medial side of the thigh?

Accepted Answer

Vastus medialis

Question 18

Which of the following is a function of the thalamus?

Accepted Answer

Relay of sensory information to the cerebral cortex

Question 19

Which structure is found in the white matter of the spinal cord and is responsible for carrying motor signals from the brain to the body?

Accepted Answer

Ventral funiculus

Question 20

A patient with damage to the Broca's area would most likely experience which symptom?

Accepted Answer

Impaired speech production

Anatomy & Physiology Lab Practical 2 Study Guide: Muscle Tissue, Nervous Tissue, Brain, Spinal Cord, and Sensory Receptors

Study Guide - Practice Questions

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