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6.5 and 11.2 Brains and Muscles

Total questions: 40

Worksheet time: 42mins

Name
Class
Date
1.

Attachment for myosin, located in the middle of a sarcomere.

a)

Z disc

b)

I band

c)

M line

d)

A band

2.
Basic functional unit of skeletal muscle
a)
M line
b)
Sarcomere
c)
H zone
d)
Z disc
3.
Anchors actin filaments 
a)
Z disc
b)
H zone
c)
A band
d)
I band
4.
Contains myosin and overlapping actin filaments
a)
H zone 
b)
I band 
c)
Z disc
d)
A band
5.
What is released from the scaroplasmic reticulumn  and is required to get the myosin binding sites exposed (on an actin filament)?
a)
Sodium
b)
Potassium
c)
Calcium
d)
acetylcholine
6.
Which statement is true:
Acetylcholine is involved in:
a)Diffusing across the synaptic cleft from the axon terminal
b) Binding to receptors and ligand channels
c) Acetylcholine initiates the action potential (AP) in a muscle fibre
d) All of the above
a)
A
b)
B
c)
C
d)
D
7.
Once the action potential has traveled along the sacrolemma, what structure takes the action potential into the interior of the muscle fibre?
a)
T- tublues
b)
Sacroplasmic reticulum
c)
Mitochondria
d)
Sacroplasm
8.
What is the role of calcium in the cross bridge cycle ?
a)
Attaching to Troponin on the actin filament, causing a shape change. The Tropomyosin exposes the actin attachment site for myosin.
b)
It attaches straight to Tropomyosin on the myosin filament. 
c)
The calcium attaches to both Troponin and Tropomyosin at the same time, connecting the actin and myosin filaments
d)
Calcium is only required after the Tropomyosin has allowed myosin to bind to the exposed actin sit on the thin filament
9.
True or False:
Acetylcholinesterase is an enzyme that breaks down Acetylcholine into two different parts.
a)
True
b)
False
10.
Which is the correct sequence in the transmission of a neural impulse?
a)
axon, dendrite, cell body, synapse
b)
dendrite, axon, cell body, synapse
c)
synapse, axon, dendrite, cell body
d)
dendrite, cell body, axon, synapse
11.
An axon conducts nerve impulses _________ the cell body.
a)
away from
b)
toward
c)
both toward and away
d)
around, bypassing
12.
W
a)
Axon Terminal Button
b)
Neurotransmitters
c)
Dendrite
d)
Synapse
13.
Z
a)
Dendrite
b)
Axon Terminal
c)
Neurotransmitters
d)
Synapse
14.
The part of the neuron that receives signals is the:
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
15.
Which neurotransmitter  is the primary neurotransmitter of somatic & parasympathetic NS and stimulates skeletal muscles?
a)
GABA
b)
Acetylcholine
c)
Dopamine
d)
Seritonin
16.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
17.
What number(s) on the graph represents the Resting Potential?
a)
1 and 2
b)
1 and 5
c)
2 and 3
d)
3 and 4
18.
What number on the graph represents the Depolarization phase?
a)
1
b)
2
c)
3
d)
4
19.
What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?
a)
Axon
b)
Dendrites
c)
Node of Ranvier
d)
Myelin Sheath
20.
When a neuron is depolarized, what are the first channels to open?
a)
Sodium
b)
Potassium
c)
Calcium
d)
ACTH
21.
What is the main control center of the body that contains the brain and spinal cord?
a)
Peripheral nervous system
b)
Central nervous system
c)
Autonomic nervous system
d)
Somatic nervous system
22.
Moving a body part towards the midline is
a)
adduction.
b)
abduction.
c)
rotation.
d)
protraction.
23.
Moving a body part away from the midline is 
a)
rotation.
b)
adduction.
c)
abduction.
d)
pronation.
24.
Extension of the parts at a joint beyond anatomical position is
a)
flexion.
b)
extension.
c)
hyperextension.
25.
The knee joint is
a)
Hinge
b)
Gliding
c)
Ball and socket
d)
Pivot
26.
What is the name for the connector that attaches bone to bone?
a)
ligament
b)
tendon
c)
patella
d)
string
27.
a)
1st class
b)
2nd class
c)
3rd class
d)
4th class
28.
Number 5.
a)
Radius
b)
Ulna
c)
Fibia
d)
Humerus
29.
The neurotransmitter stored in the axon terminal identified as #3
a)
Acetylcholine
b)
Protein Channel
c)
Calcium Ion (Ca2+)
d)
Syanptic Cleft
30.

The specialized part of the cell membrane of the muscle fiber identified as #5

a)

Sodium ion (Na+)

b)

Axon Terminal of Motor Neuron

c)

motor end plate

d)

Vesicle

31.
The energy needed to perform a muscle contraction comes directly from
a)
ATP
b)
Oxygen
c)
Glucose
d)
Calcium
32.
Cellular respiration that occurs without oxygen present is called
a)
aerobic
b)
anaerobic
c)
isotonic
d)
isometric
33.

The part of the sarcomere that C (Blue) refers to is the...

a)

Actin

b)

Myosin

c)

Troponin

d)

Tropomyosin

34.
What state is the sarcomere in #1
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
35.
Myofibrils are made up of two types of proteins known as?
a)
Actin and Myosin
b)
Troponin and Tropomyosin
c)
Myoglobin and hemoglobin
d)
none of these
36.

How may sarcomeres are shown above?

a)

6

b)

5

c)

4

d)

3

37.

Calcium ions are responsible for.....

a)

signaling the release of the neurotransmitter

b)

signaling Na+ to be released into the membrane

c)

signaling the release of K+ out of the membrane

d)

serving as the neurotransmitter

38.

Location at which a neuron can transfer an impulse to another cell with the use of neurotransmitters is called ...

a)

myelin sheath

b)

axon

c)

threshold

d)

synapse

39.

By what process do vesicles containing neurotransmitter leave the axon terminal?

a)

Exocytosis

b)

Endocytosis

c)

Diffusion

d)

Through gated channels

40.

The decline in European honeybee (Apis mellifera) populations may be linked to neonicotinoid pesticides. What effect do these pesticides have on the nervous system of insects?

a)

They prevent acetylcholinesterase from breaking down acetylcholine.

b)

They inhibit depolarization in the presynaptic neuron which increases the levels of acetylcholine.

c)

They produce an inhibitor that promotes the binding of acetylcholine.

d)

They block synaptic transmission by binding with postsynaptic acetylcholine receptors.

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