Biology · General Awareness

Muscle Biology

798 Questions

Muscle biology covers the structures, functions, and contraction mechanisms of skeletal, cardiac, and smooth muscles. Test questions target filaments, stimuli, and specific muscle roles. A clear understanding helps secure marks in biology sections.

Skeletal muscle controlCardiac muscle propertiesMuscle contraction mechanismActin and myosin filamentsMuscle functions

Muscle Biology Questions

Multiple choice

What is intra muscular injection?

  1. It is administered via the blood vessels

  2. It is administered in the muscle

  3. It is administered intradermal

  4. It is administered under the skin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An intramuscular (IM) injection is administered directly into the muscle tissue. This allows for relatively rapid absorption compared to subcutaneous injections.

Multiple choice biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

The ion that always keeps the cardiac muscle unit in contracting state is

  1. Sodium

  2. Potassium

  3. Calcium

  4. Magnesium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The calcium ions are responsible for muscle contraction by generating the action potential in the muscle cells. More influx of calcium ions may contract the heart muscle to a prolonged state of contraction, which will lead to abnormal increase in the heart rate. 

Multiple choice biology simple nutrients into cells blood and its components components of blood composition of blood

Read the following statements and select the correct option.
A. Blood cells secrete fibres of structural proteins called collagen or elastin.
B. Neuroglial cells protect and support the nephrons.
C. Osteocytes are present in spaces called lacunae.
D. Striated muscle fibres are bundles together in a parallel fashion.
E. Biceps are involuntary and striated.

  1. C and D statements are wrong.

  2. A and C statements are wrong.

  3. B and C statements are wrong.

  4. A, B and E statements are wrong.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Voluntary muscles are under the control of the will and is generally attached to the skeleton. An individual muscle consists of bundles of long muscle fibres, each bounded by a sarcolemma and containing sarcoplasm, sarcoplasmic reticulum, and many nuclei. Ex - Biceps.Neuroglial cells protect and support the neurons. Blood cells secrete fibrin that helps in clotting during an injury or a wound.

So the correct option is 'A, B and E statements are wrong'.
Multiple choice

Which physiological system is responsible for providing energy during short-duration, high-intensity exercise?

  1. Aerobic system

  2. Anaerobic system

  3. Neuromuscular system

  4. Skeletal system
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The anaerobic system is responsible for providing energy during short-duration, high-intensity exercise. This system relies on the breakdown of glucose without the use of oxygen.

Multiple choice

Which physiological adaptation occurs in response to regular endurance training?

  1. Increased muscle mass

  2. Decreased resting heart rate

  3. Improved flexibility

  4. Enhanced power output
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Regular endurance training leads to a decrease in resting heart rate. This adaptation is a result of the heart becoming more efficient at pumping blood.

Multiple choice

Which physiological adaptation occurs in response to regular strength training?

  1. Increased muscle mass

  2. Decreased resting heart rate

  3. Improved flexibility

  4. Enhanced power output
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Regular strength training leads to an increase in muscle mass. This adaptation is a result of the muscles becoming stronger and larger.

Multiple choice

Which physiological adaptation occurs in response to regular flexibility training?

  1. Increased muscle mass

  2. Decreased resting heart rate

  3. Improved flexibility

  4. Enhanced power output
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Regular flexibility training leads to improved flexibility. This adaptation is a result of the muscles and connective tissues becoming more elastic.

Multiple choice

Which of the following muscle groups is primarily engaged during trekking and mountaineering?

  1. Legs and glutes

  2. Back and shoulders

  3. Arms and chest

  4. Core muscles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trekking and mountaineering involve extensive use of the legs and glutes for climbing, walking, and carrying gear.

Multiple choice

What is the term for the gradual loss of muscle mass and strength that occurs with aging?

  1. Sarcopenia

  2. Osteoporosis

  3. Arthritis

  4. Neuropathy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sarcopenia is the loss of muscle mass and strength that occurs with aging. It can lead to weakness, fatigue, and difficulty performing everyday activities.

Multiple choice

What is the primary muscle group responsible for grip strength?

  1. Biceps

  2. Triceps

  3. Forearms

  4. Shoulders
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The forearm muscles, particularly the flexors and extensors, play a significant role in generating grip strength.

Multiple choice

Which herb is commonly used to relieve muscle pain and tension?

  1. Peppermint

  2. Lavender

  3. Chamomile

  4. Eucalyptus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eucalyptus is known for its analgesic and anti-inflammatory properties, making it a popular choice for relieving muscle pain and tension.

Multiple choice

What is the term for a chronic inflammatory joint disease that causes pain, stiffness, and swelling?

  1. Arthritis

  2. Osteoporosis

  3. Gout

  4. Lupus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Arthritis is a chronic inflammatory joint disease that causes pain, stiffness, and swelling, affecting the joints and surrounding tissues.

Multiple choice

What is the primary component of a muscle fiber?

  1. Myosin

  2. Actin

  3. Troponin

  4. Tropomyosin
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Muscle fibers are composed primarily of actin and myosin filaments, which slide past each other during muscle contraction.