Jeopardy

Muscle structure

100

Muscle cell is called a 

Muscle fiber or myofiber 

200

Give the names of the following structures:

1. THE ENDOPLASMIC RETICULUM OF A MUSCLE CELL

2. THE CELL MEMBRANE OF A MUSCLE CELL

1. Sarcoplasmic reticulum 

2. Sarcolemma 

300

WHAT IS THE NAME OF THE CONTRACTILE UNIT OF A MUSCLE?

Sarcomere 

400

BEGINNING WITH MYOFILAMENTS, GIVE THE LEVELS OF ORGANIZATION OF A MUSCLE FROM SMALLEST TO LARGEST (4 TOTAL)

MYOFILAMENTS (ACTIN AND MYOSIN)

MYOFIBRILS

MUSCLE FIBERS/ MYOFIBERS/ MUSCLE CELLS

FASCICLES

MUSCLE

500

WHICH 3 MICROSCOPIC COMPONENTS MAKE UP THE

TRIAD IN SKELETAL MUSCLE?

A. SARCOPLASMIC RETICULUM,  MYOFIBER, T-TUBULE

B. SARCOPLASMIC RETICULUM, MYOFIBER, MYOFIBRIL

C. SARCOPLASMIC RETICULUM, T-TUBULE, SARCOPLASMIC RETICULUM

D. T-TUBULE, MYOFIBER, MYOFIBRIL

Sarcoplasmic reticulum, T tubules, Sarcoplasmic reticulum 

Muscle contraction I

100

1. THIS IS THE NEUROTRANSMITTER RELEASED AT THE NEURO-MUSCULAR JUNCTION

2. THIS ENZYME BREAKS IT DOWN WHEN THE NERVE IMPULSE CEASES

1. ACETYCHOLINE

2. ACETYCHOLINESTERASE

200

1. THE COMBINATION OF THE MOTOR NEURON AND MUSCLE IS CALLED THE:

2. WHAT IS THE AFFECT OF THE NEUROTRANSMITTER (FROM THE NEURON) ON THE MUSCLE CELL?

1. MOTOR UNIT

2. RELEASE OF CALCIUM (FROM SARCOPLASMIC RETICULUM)

300

_____ exposes actin binding sites after Ca+2 binds to ______

Tropomyosin Troponin 

400

PUT THE FOLLOWING STAGES IN ORDER

1) Calcium is released from the S.R.

2) A nerve impulse reaches the synapse

3) Calcium allows the myosin-actin complex

to connect

4) Acetylcholine crosses the synaptic cleft

5) Acetylcholine is broken down

6) The nerve impulse ceases

l2) A nerve impulse reaches the synapse

l4) Acetylcholine crosses the synaptic cleft

l1) Calcium is released from the S.R.

l 3) Calcium allows the myosin-actin complex to connect

l6) The nerve impulse ceases

l5) Acetylcholine is broken down

500

1. THIS MODEL DESCRIBES HOW THE SARCOMERE CONTRACTS.

2. THESE ARE THE STEPS OF THAT MODEL (START WITH ENERGIZED CROSSBRIDGES ATTACHED)

l1) ADP and P are released causing the power stroke

l2) ATP binds, causing Actin and Myosin to disconnect

l3) ATP is split, re-energizing the myosin head            4) Calcium is released, exposing the myosin bonding site.

Muscle contraction II

100

A QUICK CONTRACTION BY A SINGLE FIBER IS CALLED A:

IF MULTIPLE ONES OCCUR, IT IS CALLED:

Twitch 

Summation 

200

WHAT IS THE “FUEL’’ FOR MUSCLE CONTRACTION?

ATP 

300

lTHIS BUILDS UP TO MAKE MUSCLES SORE AFTER A STRENUOUS WORKOUT

Lactic acid 

400

As the sarcomere contracts, which of the following shorten(s) in length or disappear(s)?

  Z line

  I band

  A band

  H zone

  M line

I band 

H zone 

500

Its length does not change during contraction 

A band 

Miscellaneous

100

These muscles lack striations and are involuntary.

These muscles have striations and are involuntary

Smooth 

Cardiac 

200

These are only found in muscle that is involuntary and striated, and they connect these cells to allow them to work as a functional organ.

Intercalated discs 

300

Give an example of a visceral smooth muscle 

Internal organs 

400

Identify any 3 things needed for a muscle to contract.

ATP

Calcium

Neurotransmitter

Blood Supply

500

This muscle resists the muscle responsible for most of the movement

Antagonist 

Previous content

100

Where is the genetic material present in the neuron 

Soma ( cell body) 

200

What structure covers the active sites in actin? 

Tropomyosin 

300

Blood is made in what bone marrow? 

Red bone marrow 

400

What kind of skeleton do echinoderms have? 

Endoskeleton 

500

Transitional epithelium is present where? 

( Hint-special case) 

Urinary bladder and parts of urethra/ ureter