Anatomy Exam Human Anatomy 4 — Questions and Answers
Question 1: Which muscle flexes the thigh at the hip and extends the leg at the knee?
- Hamstrings
- Gluteus maximus
- Rectus femoris (Correct answer)
- Adductor magnus
Correct answer: Rectus femoris
Rectus femoris is the only quadriceps muscle that crosses the hip joint, allowing it to flex the thigh while also extending the knee.
Question 2: The Circle of Willis receives blood from how many major arteries?
- Two
- Three (Correct answer)
- Four
- Five
Correct answer: Three
The Circle of Willis is supplied by three arteries: two internal carotid arteries and one basilar artery.
Question 3: Which structure in the kidney is responsible for filtration of blood?
- Loop of Henle
- Glomerulus (Correct answer)
- Collecting duct
- Distal convoluted tubule
Correct answer: Glomerulus
The glomerulus is a capillary network within Bowman's capsule where blood filtration occurs to form the initial filtrate.
Question 4: The anatomical position of the appendix is typically located at which landmark?
- McBurney's point (Correct answer)
- Murphy's point
- Cullen's sign
- Grey Turner's sign
Correct answer: McBurney's point
McBurney's point, located one-third of the way from the anterior superior iliac spine to the umbilicus, overlies the typical position of the appendix.
Question 5: Which type of joint allows the greatest range of motion?
- Hinge joint
- Pivot joint
- Ball-and-socket joint (Correct answer)
- Saddle joint
Correct answer: Ball-and-socket joint
Ball-and-socket joints, such as the hip and shoulder, permit movement in all planes including rotation, providing the greatest range of motion.
Question 6: The thoracic duct drains lymph into which venous structure?
- Right subclavian vein
- Left brachiocephalic vein
- Superior vena cava
- Left subclavian vein at the junction with the left internal jugular vein (Correct answer)
Correct answer: Left subclavian vein at the junction with the left internal jugular vein
The thoracic duct empties into the venous system at the left venous angle, where the left subclavian vein meets the left internal jugular vein.
Question 7: Which muscle of the tongue is entirely intrinsic?
- Genioglossus
- Hyoglossus
- Styloglossus
- Transverse muscle of tongue (Correct answer)
Correct answer: Transverse muscle of tongue
The transverse muscle of the tongue is an intrinsic muscle that narrows and elongates the tongue, with both origin and insertion within the tongue itself.
Anatomy Exam Human Anatomy 4
Which muscle flexes the thigh at the hip and extends the leg at the knee?