Human Anatomy and Physiology Flashcards

A soft tissue structure called a ligament connects what?

Answer: Muscle to bone

Explanation: Ligaments are tough bands of fibrous connective tissue that connect bones to other bones at joints. They provide stability and support to the joint by limiting excessive movement. Therefore, ligaments primarily connect bone to bone, not muscle to organ or other structures mentioned in the options.

The external factors in stress management upon the body are termed by what?

Answer: Environmental

Explanation: Environmental factors refer to the external influences and surroundings that can impact an individual's stress levels and overall well-being. In stress management, understanding and managing environmental factors such as work environment, living conditions, social surroundings, and exposure to noise or pollutants are crucial for promoting health and reducing stress.

The Valsalva maneuver is generally used by who?

Answer: Anaerobic athletes during maximum explosion.

Explanation: The Valsalva maneuver involves forcefully exhaling against a closed airway, typically by closing the mouth and pinching the nose shut. This technique is commonly used by anaerobic athletes during maximal efforts, such as weightlifting or powerlifting, to create intra-abdominal pressure and stabilize the core during intense lifts or explosive movements. It helps maintain spinal stability and support during heavy lifts, reducing the risk of injury.

What muscle is the prime mover in a squat?

Answer: Quadriceps

Explanation: During a squat exercise, the quadriceps muscles, specifically the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius, are the primary movers responsible for extending the knee joint. These muscles work together to straighten the leg from a bent position, which is crucial in performing a squat movement. Therefore, the quadriceps are considered the prime movers or agonists in this exercise.

What organelle is responsible for energy production?

Answer: Mitochondria

Explanation: Mitochondria are organelles within cells that are responsible for producing energy in the form of adenosine triphosphate (ATP) through aerobic respiration. They are often referred to as the "powerhouses" of the cell due to their role in generating energy from nutrients. The Golgi complex is involved in packaging and modifying proteins, the nucleus contains genetic material and regulates cell activities, and the rough endoplasmic reticulum is involved in protein synthesis and transport.

What is the unit used to measure blood pressure?

Answer: Millimeters of mercury (mmHg)

Explanation: Blood pressure is typically measured in millimeters of mercury (mmHg), which represents the pressure exerted by blood against the walls of arteries during various phases of heart activity. This unit is a standard measure used in medical and health contexts to assess cardiovascular health and function.

The MOST accurate time to obtain resting heart rate is:

Answer: before rising from bed.

Explanation: Resting heart rate refers to the heart rate measured when the body is at complete rest, typically in the morning after a night's sleep and before any physical activity or stimulation (such as rising from bed). This is when the heart rate is most stable and reflective of the body's baseline cardiovascular condition. Therefore, the most accurate time to obtain a resting heart rate is before rising from bed.

What should the client do if they experience a contraindication while exercising?

Answer: Stop exercising

Explanation: If a client experiences a contraindication while exercising, such as pain, dizziness, shortness of breath, or any other concerning symptom, the safest and most appropriate action is to stop exercising immediately. Continuing to exercise could potentially worsen the condition or lead to injury. It's important for clients to listen to their bodies and prioritize safety during exercise sessions.

How much work capacity is lost at 2% dehydration?

Answer: 5-8%

Explanation: Research indicates that dehydration by as little as 2% of body weight can lead to a decrease in physical and cognitive performance, including reduced work capacity. The estimated loss in work capacity at 2% dehydration ranges approximately between 5% to 8%, depending on individual factors such as fitness level and environmental conditions. Therefore, option B (5-8%) is the most appropriate answer regarding the decrease in work capacity at 2% dehydration.

Intense weight training on a full stomach can result in what?

Answer: Nausea

Explanation: Intense weight training on a full stomach can lead to nausea due to several factors such as reduced blood flow to the stomach during exercise, gastrointestinal distress, and discomfort caused by vigorous physical activity while digestion is still ongoing. It's generally recommended to allow adequate time for food digestion before engaging in intense weight training to avoid potential discomfort or nausea.

What is the insertion point for the pectoralis major?

Answer: Humerus

Explanation: The pectoralis major muscle inserts on the humerus (upper arm bone). It originates from the clavicle (collarbone) and sternum (breastbone) and forms the bulk of the chest muscles. The insertion point on the humerus allows the pectoralis major to pull the arm across the body (horizontal adduction) and rotate it inward (medial rotation).