Unit 2 Anatomy: Skeletal Muscle

Multiple Choice

Which of the following is a property common to all muscle tissue?

• Ability to contract

• Ability to store fat

• Ability to produce hormones

• Ability to digest food

Multiple Choice

Which of the following is NOT a characteristic common to muscle tissue?

• Contractility

• Extensibility

• Elasticity

• Ossification

Open Ended

Explain how nerves and capillaries interact to support muscle function.

Multiple Select

Which of the following statements about muscle types is/are correct?

• Smooth muscle works involuntarily and has no striations.

• Cardiac muscle may have 1-2 nuclei and is striated.

• Skeletal muscle works involuntarily and has a single nucleus.

• Skeletal muscle is attached to bones and is responsible for movement.

Open Ended

What is the difference between the origin and insertion of a skeletal muscle, and how does this relate to muscle movement?

Multiple Choice

Which type of muscle contraction involves the muscle remaining the same length while contracting?

• Isotonic

• Isometric

• Concentric

• Eccentric

Multiple Choice

Which of the following is an example of an isometric exercise?

• Holding a plank position
• Doing jumping jacks
• Performing a squat
• Running on a treadmill

Multiple Choice

During the up phase of a squat, what type of muscle contraction is seen in the quadriceps?

• Eccentric contraction
• Concentric contraction
• Isometric contraction
• Isokinetic contraction

Multiple Select

Which of the following are examples of isotonic muscle contractions?

• Bicep raising a weight

• Bicep lowering a weight

• plank

• wall sit

Open Ended

Compare and contrast isotonic and isometric muscle contractions, providing examples of each.

Multiple Choice

Which muscles act as antagonistic pairs at the elbow joint?

• Biceps and triceps

• Quadriceps and hamstrings

• Deltoid and pectoralis major

• Gastrocnemius and soleus

Multiple Choice

Which of the following best describes the role of a fixator/stabilizer muscle?

• Produces the main movement at a joint

• Relaxes to allow the agonist to contract

• Aids the agonist by adding more power

• Prevents unwanted movement at a joint

Multiple Choice

During the up phase of the bicep curl, which muscle is the agonist?

• Triceps brachii
• Bicep femoris

• Pectoralis major
• Bicep brachii

Multiple Choice

During the up phase of a squat which muscles are the antagonists acting at the hip and knee

• quadriceps

• iliopsoas

• hamstrings

• gluteus maximus

Open Ended

Explain how agonistic and antagonistic muscles work together to produce movement in the body.

​Your Task:

Assuming antagonists work on the opposite sides of the body, work with your group to determine the antagonist for each of the muscles we learned

Multiple Choice

Which muscle needs to contract to produce extension of the elbow?

• Tricep brachii

• Bicep brachii

• Deltoid

• Pectoralis major

Multiple Choice

Which muscle needs to relax to produce extension of the elbow

• Bicep femoris

• Tricep brachii

• Bicep brachii

• Deltoid

Open Ended

Explain the concept of reciprocal inhibition and provide an example from the human body.

Multiple Select

What are the cause of Delayed Onset Muscle Soreness?

• Lactic acid buildup in the bloodstream.
• Inadequate hydration before exercise.
• Genetic predisposition to muscle soreness.
• Microscopic damage to muscle fibers during intense exercise.
• Hydrogen ion buildup

Open Ended

Group Discussion: "Sprinters are born and not made." Do you think nature or nurture has a bigger influence on becoming an Olympic sprinter? Consider growth mindset, self-fulfilling prophecy, and innate talent in your response.

Multiple Select

Which of the following characteristics are true for slow twitch muscle fibers?

• Smaller in diameter

• Contain more mitochondria

• Fatigue quickly

• Use aerobic respiration for ATP supply

Multiple Choice

Which of the following statements best describes the main structural and functional differences between slow twitch and fast twitch muscle fibers?

• Slow twitch fibers are smaller in diameter, have more mitochondria, and are more resistant to fatigue than fast twitch fibers.

• Fast twitch fibers are smaller in diameter, have more mitochondria, and are more resistant to fatigue than slow twitch fibers.

• Slow twitch fibers are larger in diameter, have fewer mitochondria, and fatigue quickly compared to fast twitch fibers.

• Fast twitch fibers use aerobic respiration for ATP supply and are reddish in color.

Task: Complete the table to the best of your ability

Open Ended

Outline the order of muscle fiber recruitment of a cross country runner during a 10 kilometer race with a sprint finish.