California State University, Northridge BIO 101 Chapter 40 1)An earthworm moves by alternating muscular contractions against a         2

California State University, Northridge

BIO 101

Chapter 40

1)An earthworm moves by alternating muscular contractions against a

2. The connective tissues that connect muscles to bones are called:

3. The vertebrate skeleton consists of    .

4.            Which of these animals is correctly matched with its type of skeleton?

5.            The thick filaments of a myofibril are composed of:

6.            At a molecular level, muscle contraction depends on interaction between

7 The sarcoplasmic reticulum helps to trigger muscle cell contraction by releasing              into the cytoplasm

8

9 Osteoporosis is characterized by          

10. During development of a mammalian fetus, is gradually replaced by

                .

12           Which of the following are striated muscle types? (check all that apply)

13           Skeletal muscle:

14           Your flexor and extensor muscles in your arm are examples of  

15. Which of the following animals have exoskeletons? 

17. What would happen to a person who was poisoned with a chemical that blocks the production of neurotransmitters at neuromuscular junctions?

18           Which of the following human muscles have the largest motor units?

19           Skeletal muscle appears striped because of:

20           A muscle fiber generates maximum contractile force when:

21           Which of these animals have endoskeletons? (check all that apply)

22. Cnidarians have a(n)                skeleton.