CS 2.1 Ch 10.1

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| By Breanna

Breanna

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Quizzes Created: 31 | Total Attempts: 8,241

Questions: 13 | Attempts: 88 | Updated: Mar 20, 2023

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Questions and Answers

1.

The three bones that unite to form the acetabulum are the:
- A.
  
  Femur, pubis, and ischium
- B.
  
  Pubis, ischium, and innominate
- C.
  
  Ilium, ischium, and pubis
- D.
  
  Ilium, ischium, and pubis
Correct Answer
C. Ilium, ischium, and pubis

Explanation
The acetabulum is a cup-shaped socket in the pelvis that forms the hip joint. It is formed by the fusion of three bones: the ilium, ischium, and pubis. These three bones come together to create a deep socket that securely holds the head of the femur (thigh bone) in place, allowing for smooth movement and weight-bearing in the hip joint. Therefore, the correct answer is "Ilium, ischium, and pubis".

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2.

Which hip ligament attaches to the fovea capitis and acetabular notch?
- A.
  
  Ligamentum teres
- B.
  
  Ligamentum capitus
- C.
  
  Longitudinal acetabular ligament
- D.
  
  Transverse acetabular ligament
Correct Answer
A. Ligamentum teres

Explanation
The ligamentum teres attaches to both the fovea capitis of the femur and the acetabular notch of the hip. It is a small ligament that helps stabilize the hip joint and is also responsible for carrying a small blood vessel to the head of the femur.

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3.

All of the following muscles are in the deep gluteal group, except for:
- A.
  
  Quadratus femoris
- B.
  
  Iliacus
- C.
  
  Obturator externus
- D.
  
  Superior gemellus
Correct Answer
B. Iliacus

Explanation
The correct answer is Iliacus. The deep gluteal group consists of the quadratus femoris, obturator externus, and superior gemellus muscles. The iliacus muscle, however, is not part of this group. It is a large muscle located in the pelvis and is responsible for flexing the hip joint.

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4.

Which of the following muscles is in the superficial gluteal group?
- A.
  
  Piriformis
- B.
  
  Gluteus medius
- C.
  
  Vastus medialis
- D.
  
  Semitendinosus
Correct Answer
B. Gluteus medius

Explanation
The gluteus medius is part of the superficial gluteal group. This muscle is located on the lateral side of the hip and is responsible for abduction and stabilization of the hip joint. It helps to maintain balance and control during activities such as walking or running. The other muscles listed, including the piriformis, vastus medialis, and semitendinosus, are not part of the superficial gluteal group.

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5.

What is the point of origin of the rectus femoris muscle of the upper anterior thigh?
- A.
  
  Greater trochanter
- B.
  
  Lesser trochanter
- C.
  
  Medial lip of the linea aspera
- D.
  
  Anterior superior iliac spine (ASIS)
Correct Answer
D. Anterior superior iliac spine (ASIS)

Explanation
The point of origin of the rectus femoris muscle is the Anterior Superior Iliac Spine (ASIS). The rectus femoris is one of the four quadriceps muscles located in the upper anterior thigh. It originates from the ASIS, which is a bony prominence at the front of the iliac crest. From there, the muscle extends down the thigh and attaches to the patella and tibia. The ASIS serves as the starting point for the rectus femoris muscle, allowing it to contribute to hip flexion and knee extension.

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6.

The largest peripheral nerve in the body is the:
- A.
  
  Femoral
- B.
  
  Spinal cord
- C.
  
  Sciatic
- D.
  
  Trigeminal
Correct Answer
C. Sciatic

Explanation
The sciatic nerve is the largest peripheral nerve in the body. It is formed by the combination of several nerve roots in the lower spine and extends down through the buttocks and into the legs. This nerve provides motor and sensory function to the muscles of the lower leg and foot. It also carries sensory information from the skin of the leg and foot back to the brain. Due to its size and importance in lower limb function, the sciatic nerve is considered the largest peripheral nerve in the body.

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7.

The intracapsular ligaments of the knee function to:
- A.
  
  Guard against hyperextension
- B.
  
  Support the menisci
- C.
  
  Bind the femur to the tibia
- D.
  
  Support the anterior aspect of the joint capsule
Correct Answer
A. Guard against hyperextension

Explanation
The intracapsular ligaments of the knee, such as the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL), function to guard against hyperextension. Hyperextension is the excessive extension or straightening of a joint beyond its normal range of motion. The ACL and PCL prevent the tibia from sliding too far forward or backward, respectively, in relation to the femur, thereby protecting the knee from hyperextension.

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8.

The IT band supports the joint capsule of the knee on the:
- A.
  
  Anteromedial aspect
- B.
  
  Anterolateral aspect
- C.
  
  Posteromedial aspect
- D.
  
  Posterolateral aspect
Correct Answer
B. Anterolateral aspect

Explanation
The IT band supports the joint capsule of the knee on the anterolateral aspect. The IT band, or iliotibial band, is a thick band of connective tissue that runs along the outside of the thigh. It helps stabilize the knee joint and provides support during movements such as running and walking. The anterolateral aspect refers to the front and outside portion of the knee, where the IT band attaches.

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9.

What is the name of the bony prominence located at about midline on the superior aspect of the tibia?
- A.
  
  Tibial condyle
- B.
  
  Tibial plateau
- C.
  
  Tibial tuberosity
- D.
  
  Intercondylar eminence
Correct Answer
D. Intercondylar eminence

Explanation
The intercondylar eminence is the bony prominence located at about midline on the superior aspect of the tibia. It is a raised area between the two tibial condyles and serves as an attachment site for ligaments in the knee joint. The tibial condyle refers to the rounded articular surface at the end of the tibia, the tibial plateau is the flat top surface of the tibia, and the tibial tuberosity is a bony prominence located on the anterior aspect of the tibia.

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10.

C-shaped pads of tough, yet flexible, fibrous connective tissue that function as shock absorbers to cushion the knee joint are termed:
- A.
  
  Menisci
- B.
  
  Cruciates
- C.
  
  Bursae
- D.
  
  Retinacula
Correct Answer
A. Menisci

Explanation
The correct answer is Menisci. Menisci are C-shaped pads of tough, yet flexible, fibrous connective tissue that are located in the knee joint. They act as shock absorbers, cushioning the joint and helping to distribute weight evenly across the joint surface. Menisci also provide stability to the knee joint and help to improve joint congruency.

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11.

Which extracapsular ligament supports the middle of the posterior aspect of the knee joint?
- A.
  
  Arcuate popliteal
- B.
  
  Oblique popliteal
- C.
  
  Fossa retinaculum
- D.
  
  Posterior cruciate
Correct Answer
B. Oblique popliteal

Explanation
The oblique popliteal ligament supports the middle of the posterior aspect of the knee joint. It originates from the semimembranosus tendon and reinforces the joint capsule. It helps to stabilize the knee joint and prevent excessive posterior movement of the tibia.

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12.

What is the function of the collateral ligaments of the knee?
- A.
  
  Support the anterior and superior aspect
- B.
  
  Support the anterior and inferior aspect
- C.
  
  Reinforce the sides of the joint capsule
- D.
  
  Prevent hyperextension of the knee joint
Correct Answer
C. Reinforce the sides of the joint capsule

Explanation
The collateral ligaments of the knee reinforce the sides of the joint capsule. These ligaments, the medial collateral ligament (MCL) and the lateral collateral ligament (LCL), provide stability to the knee joint by preventing excessive side-to-side movement. They help to maintain proper alignment and prevent the knee from buckling or giving way.

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13.

Which of the following are vascular structures of the knee?(1) Popliteal artery(2) Common fibular artery(3) Peroneal artery
- A.
  
  1 and 2 only
- B.
  
  1 and 3 only
- C.
  
  2 and 3 only
- D.
  
  1, 2, and 3
Correct Answer
B. 1 and 3 only

Explanation
The popliteal artery is a vascular structure of the knee, as it is the continuation of the femoral artery and supplies blood to the knee joint. The common fibular artery, also known as the peroneal artery, is not a vascular structure of the knee. It is a branch of the popliteal artery that supplies blood to the lower leg and foot. Therefore, the correct answer is 1 and 3 only.

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Cs 2.1 Ch 10.1

The three bones that unite to form the acetabulum are the:

Which hip ligament attaches to the fovea capitis and acetabular notch?

All of the following muscles are in the deep gluteal group, except for:

Which of the following muscles is in the superficial gluteal group?

What is the point of origin of the rectus femoris muscle of the upper anterior thigh?

The largest peripheral nerve in the body is the:

The intracapsular ligaments of the knee function to:

The IT band supports the joint capsule of the knee on the:

What is the name of the bony prominence located at about midline on the superior aspect of the tibia?

C-shaped pads of tough, yet flexible, fibrous connective tissue that function as shock absorbers to cushion the knee joint are termed:

Which extracapsular ligament supports the middle of the posterior aspect of the knee joint?

What is the function of the collateral ligaments of the knee?

Which of the following are vascular structures of the knee?(1) Popliteal artery(2) Common fibular artery(3) Peroneal artery