Question 1

In the correct anatomical position, is the right hallux lateral to the right metatarsal V (5)?

Accepted Answer

False

Question 2

Which of the following statements about the axial skeleton is correct?

Accepted Answer

It includes the skull, vertebral column, thoracic cage, and pelvis.

Question 3

Which compound provides the hardness of bone?

Accepted Answer

Hydroxyapatite

Question 4

Ligaments are primarily made of which type of tissue?

Accepted Answer

Dense regular connective tissue

Question 5

The lateral malleolus is a feature of which bone?

Accepted Answer

Fibula

Question 6

How many tarsal bones are found in the human foot?

Accepted Answer

7

Question 7

Potassium concentration is higher:

Accepted Answer

Inside the cell

Question 8

If potassium leaks out of the cell, what effect does this have on the resting membrane potential?

Accepted Answer

It will become more negative.

Question 9

When potassium leaks out of the cell, this is an example of:

Accepted Answer

Simple diffusion

Question 10

Which compound is responsible for the detachment of the myosin head from actin in skeletal muscle cross bridge cycling?

Accepted Answer

ATP

Question 11

Which skeletal muscle fiber type contains the most myoglobin?

Accepted Answer

Slow twitch

Question 12

Dantrolene is a muscle relaxant used to treat malignant hyperthermia. It acts as an antagonist to which protein?

Accepted Answer

RyR

Question 13

Which spinal cord tract does NOT cross the midline?

Accepted Answer

Spinocerebellar tract

Question 14

Where does the corticospinal tract cross the midline to the opposite side of the body?

Accepted Answer

Medulla oblongata

Question 15

What kind of information does the spinothalamic tract carry?

Accepted Answer

Pain

Question 16

Which ion is responsible for the depolarization phase of the neuronal action potential?

Accepted Answer

Na+

Question 17

Tetrodotoxin (TTX) from pufferfish inhibits action potentials by blocking which ion channel?

Accepted Answer

Na+

Question 18

Lidocaine is a drug that numbs a specific area of the body. It works by:

Accepted Answer

Inhibiting voltage gated Na+ channels

Question 19

Put these 4 events in correct order for a typical GPCR cascade:
A. GDP unbinds from G protein
B. GTP is hydrolyzed by the G protein
C. G protein unbinds from receptor
D. 1st messenger binds to receptor

Accepted Answer

D, A, C, B

Question 20

A patient is given a drug that blocks voltage-gated Na+ channels in neurons. What is the most likely effect on neuronal action potentials?

Accepted Answer

Action potentials will be inhibited.

Comprehensive Study Guide: Exam 3 Prep for Anatomy & Physiology

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