YMCA Anatomy & Physiology 2

Question 1

Which type of muscle tissue is found in the walls of the heart?

Accepted Answer

Cardiac muscle

Answer

Cardiac muscle is a unique striated involuntary muscle found exclusively in the heart walls.

Question 2

The thoracic spine consists of how many vertebrae?

Accepted Answer

12

Answer

The thoracic spine has 12 vertebrae (T1–T12), each articulating with a pair of ribs.

Question 3

During a seated forward fold, which muscle group is primarily lengthened?

Accepted Answer

Hamstrings

Answer

The hamstrings (biceps femoris, semitendinosus, semimembranosus) are stretched as the hip flexes while the knee remains extended.

Question 4

What is the primary role of synovial fluid in joint health?

Accepted Answer

Lubricate and nourish articular cartilage

Answer

Synovial fluid reduces friction between articular surfaces and delivers nutrients to avascular cartilage.

Question 5

Which nerve plexus innervates the lower limbs and is most relevant when teaching standing yoga poses?

Accepted Answer

Lumbosacral plexus

Answer

The lumbosacral plexus (lumbar + sacral) provides motor and sensory innervation to the entire lower extremity.

(YMCA) Young Men's Christian Association Yoga Certification Practice Test