BSC 2346 Human Anatomy & Physiology I

A&P Final Exam - Rasmussen

What is a primary function of the skeletal system?

- Hematopoietic (blood cell production) site

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- Triglyceride (fat) storage

- Movement

Which choice best describes what a fascicle is

- Bundle of muscle FIBERS enclosed by connective tissue

Which choice best describes the function T-tubules have within muscle contraction

- Transmit the action potential deep into the muscle cell

What structure separates one fascicle from another in a muscle

- Perimysium

Which statement is true regarding muscle contraction?

- ATP is needed to release the thick filament from the thin filament 

What factors are required for the process of muscle contraction to occur

- Acetylcholine must be bound to the sarcolemma

- Presence and production of adenosine triphosphate (ATP)

- Cross bridging of the thick and thin filament

Which statements are true regarding slow oxidative muscle fibers?

- They contain myoglobin

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- They can contract slowly but for sustained period of times

- It is fatigue resistance

Which answers are true regarding muscle contraction?

- Tropomyosin protein covers the binding sites on the actin protein where the

thick filament will bind to actin

- The sarcoplasmic reticulum stores the calcium ions that are released within

the muscle cell

- Acetylcholine is the neurotransmitter that binds to the sarcolemma

What is the neurotransmitter released from motor neurons initiating muscle contraction?

- Acetylcholine

Which choice best describes the function of myoglobin

- Provides a small reserve supply of oxygen for the muscle cell

What statement is true of smooth muscle

- It is found mainly within internal organs such as the bladder and uterus 

Which bone cell is responsible for stimulating the production of extracellular matrix and

increasing its overall concentration?

- Osteoblast

Which choice best describes the function of the haversian (central) canals within bone

- To provide nutrients to the bone cells

Which statements are true regarding the skeletal system?

- Spongy bone of flat bones in adults is commonly filled with red bone marrow

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- External stresses placed on bone (such as exercise) will increase the bone

matrix density

- Osteocytes are "connected" to one another via canaliculi

Epiphyseal plates

- Commonly found at the epiphyses of long bone

The organic components of the extracellular matrix space include

- collagen fibers

Aerobic respiration is performed by which cellular organelle

- Mitochondria

Which statements are true regarding the hip?

- It is more stable than the glenohumeral (shoulder) joint

- It is considered a synovial joint

- It has a ligament that connects the femoral head into the acetabulum 

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