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
- 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
- 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
- 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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