Free BHK Bachelor of Kinesiology Practice Questions and Answers — Questions and Answers
Question 1: In order to move large objects, a machine with a lever system is built. Which of these would be the best for carrying a big weight with minimum exertion of effort or force?
- All lever systems have the same efficiency.
- a third-class lever
- a first-class lever
- a second-class lever (Correct answer)
Correct answer: a second-class lever
A second-class lever is ideal for moving large weights with minimum effort because the load is positioned between the fulcrum and the effort. This arrangement creates a mechanical advantage, meaning a smaller input force can lift a larger load. Examples include a wheelbarrow or a nutcracker, where the effort arm is longer than the load arm, making it efficient for heavy lifting.
Question 2: Ron stumbled on a nail while looking for his shoes. The pain made him step back and fall. Which muscle tissue or tissues contributed to Ron's response?
- skeletal and smooth
- cardiac and smooth
- skeletal (Correct answer)
- skeletal, cardiac and smooth
Correct answer: skeletal
Ron's response of stepping back and falling involves voluntary movements and reflexes, which are primarily controlled by skeletal muscle tissue. Skeletal muscles are responsible for moving bones and joints, enabling actions like stepping, balancing, and reacting to external stimuli. Cardiac and smooth muscles are involuntary and control internal organs or the heart, not conscious body movement.
Question 3: Physical therapists typically use which of the following tools to measure joint angle?
- Angleometer
- Scaleometer
- Odometer
- Goniometer (Correct answer)
Correct answer: Goniometer
A goniometer is a specialized medical instrument used by physical therapists and other healthcare professionals to measure the range of motion (ROM) of joints. It consists of two arms and a protractor-like body, allowing for precise measurement of angles. This tool is crucial for assessing joint function, tracking progress during rehabilitation, and diagnosing musculoskeletal conditions.
Question 4: Repeating units are present in each myofibril of the muscle cell and run end to end along the myofibril's length. What is the name for these units?
- Thick filaments
- Sarcomeres (Correct answer)
- Mitochondria
- Fascicles
Correct answer: Sarcomeres
Sarcomeres are the fundamental contractile units of striated muscle tissue, such as skeletal and cardiac muscle. Each myofibril is composed of a series of sarcomeres arranged end-to-end, giving the muscle its characteristic striped appearance. These units contain actin and myosin filaments, which slide past each other during muscle contraction, shortening the sarcomere and the entire muscle.
Question 5: Please pick the best way to explain proprioception.
- A sense of position, location, orientation and movement of the body (Correct answer)
- Lightning fast reflexes
- Part of the sense of balance
- The sixth sense
Correct answer: A sense of position, location, orientation and movement of the body
Proprioception is the body's ability to sense its own position, movement, and orientation in space without relying on visual input. It is a crucial component of motor control and coordination, allowing us to know where our limbs are, how much force we are exerting, and how our body is moving. This sense is mediated by specialized sensory receptors in muscles, tendons, and joints.
Question 6: If you want to increase your range of motion, what should you do first?
- Take some deep breaths.
- Engage in high intensity exercises, such as sprinting.
- Swing your arms in big circles.
- Start with small movements at the joints and then progress slowly into bigger movements. (Correct answer)
Correct answer: Start with small movements at the joints and then progress slowly into bigger movements.
To safely and effectively increase range of motion, it's best to begin with small, controlled movements at the joints and gradually increase their size and intensity. This approach allows the muscles and connective tissues to warm up and adapt progressively, reducing the risk of injury. Jumping directly into large, forceful movements can strain cold muscles and lead to injury.
Question 7: If you want to increase your range of motion, what should you do first?
- Mitochondria
- Transverse tubule (Correct answer)
- Golgi
- Myofibril
Correct answer: Transverse tubule
The Transverse tubule (T-tubule) is a crucial component of muscle cells, responsible for rapidly transmitting electrical impulses from the cell surface deep into the muscle fiber. This ensures synchronized muscle contraction by triggering calcium release from the sarcoplasmic reticulum. While the question text about increasing range of motion seems unrelated to this answer, the Transverse tubule is fundamental to muscle physiology.
Free BHK Bachelor of Kinesiology Practice Questions and Answers
In order to move large objects, a machine with a lever system is built.
Which of these would be the best for carrying a big weight with minimum exertion of effort or force?