BIO 107 CHAPTER 5 EXAM QUESTIONS
AND ANSWERS
Deep inward extensions of the sarcolemma form a tunnel-like network inside the muscle
cell known as __________. - Answer-Transverse tubules (T-tubules)
True or False, Elastic fibers are important to muscle tissue since they resist excessive
stretching and help muscle fibers spring back to its original length after being stretched -
Answer-True
Which of the following statements is the most accurate description of the sliding filament
mechanism? - Answer-Thin filaments slide past thick filaments towards the M line
Muscle contraction can occur when: - Answer-sarcomeres shorten
When a skeletal muscle fiber contracts: - Answer-the H zone and I bands narrow
True or False, Myofilaments shorten to produce muscle contractions according to the
sliding filament mechanism. - Answer-False
What characteristic is not descriptive of cardiac muscle tissue? - Answer-Voluntary
muscle contractions
What is NOT an effect of growth hormone? - Answer-Growth hormone promotes the
closure of the epiphyseal plate.
For a person who starts running for exercise, __________. - Answer-Bone deposition
exceeds bone resorption
Place the following steps of bone repair in the correct sequence.
1. The bone callus is remodeled and primary bone is replaced with secondary bone.
2. A hematoma fills the gap between bone fragments.
3. Osteoblasts build a new bone callus.
4. Fibroblasts and chondroblasts infiltrate the hematoma and a soft callus forms. -
Answer-2,4,3,1
Which of the following does NOT correctly depict the effects of parathyroid hormone
(PTH)? - Answer-PTH decreases blood calcium ion concentration
AND ANSWERS
Deep inward extensions of the sarcolemma form a tunnel-like network inside the muscle
cell known as __________. - Answer-Transverse tubules (T-tubules)
True or False, Elastic fibers are important to muscle tissue since they resist excessive
stretching and help muscle fibers spring back to its original length after being stretched -
Answer-True
Which of the following statements is the most accurate description of the sliding filament
mechanism? - Answer-Thin filaments slide past thick filaments towards the M line
Muscle contraction can occur when: - Answer-sarcomeres shorten
When a skeletal muscle fiber contracts: - Answer-the H zone and I bands narrow
True or False, Myofilaments shorten to produce muscle contractions according to the
sliding filament mechanism. - Answer-False
What characteristic is not descriptive of cardiac muscle tissue? - Answer-Voluntary
muscle contractions
What is NOT an effect of growth hormone? - Answer-Growth hormone promotes the
closure of the epiphyseal plate.
For a person who starts running for exercise, __________. - Answer-Bone deposition
exceeds bone resorption
Place the following steps of bone repair in the correct sequence.
1. The bone callus is remodeled and primary bone is replaced with secondary bone.
2. A hematoma fills the gap between bone fragments.
3. Osteoblasts build a new bone callus.
4. Fibroblasts and chondroblasts infiltrate the hematoma and a soft callus forms. -
Answer-2,4,3,1
Which of the following does NOT correctly depict the effects of parathyroid hormone
(PTH)? - Answer-PTH decreases blood calcium ion concentration
