Muscular System
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1
The ability to respond to certain stimuli
Excitability/Irritability
2
The ability to transmit impulses (electrical signals).
Conductivity
3
The ability to shorten and thicken to generate work (tension).
Contractility
4
The ability to be
stretched (lengthen)
without damage.
stretched (lengthen)
without damage.
Extensibility
5
The ability to return to
its original form and
shape after contraction or
lengthening.
its original form and
shape after contraction or
lengthening.
Elasticity
6
what is highly excitable (irritable),
meaning it can respond to nervous system
stimuli (impulses) to initiate contraction.
meaning it can respond to nervous system
stimuli (impulses) to initiate contraction.
Skeletal muscle
7
A large, sheetlike
connective
tissue covering
the entire
muscle.
connective
tissue covering
the entire
muscle.
Fascia
(bandage)
(bandage)
8
Attaches muscle
to bone. Cords of dense
connective
tissue.
to bone. Cords of dense
connective
tissue.
Tendons
9
Attaches muscle
to another
muscle.
to another
muscle.
Aponeurosis
10
Broad, flattened connective tissue.
Aponeurosis
11
Less movable attachment site,
more stable end, usually proximal.
more stable end, usually proximal.
Origin
12
More movable attachment site,
less stable end, usually distal.
less stable end, usually distal.
Insertion
13
This is the mechanism by
which muscle fibers
shorten.
which muscle fibers
shorten.
Sliding Filament Theory
14
a persistent or continuous state of slight
muscle contraction.
muscle contraction.
Muscle Tones
15
Defined as the Tension in a
Muscle at Rest.
Muscle at Rest.
Muscle Tone
16
Defined as the Muscle's
Ability to Contract and Create Force in Response
to Resistance.
Ability to Contract and Create Force in Response
to Resistance.
Muscle Strength
17
Increases
muscle tone
(tension)
but the load
is too great.
muscle tone
(tension)
but the load
is too great.
Isometric
18
Muscle
tension is
constant,
and the
muscle does
work.
tension is
constant,
and the
muscle does
work.
Isotonic
19
Produce
Muscle
Tone
Muscle
Tone
Tonic
20
the only type of muscle contraction wherein the muscle shortens
Isotonic
21
raises eyebrows
Frontalis
22
smiling/laughing
Zygomatic
23
Elevates the jaw (closes
mouth).
mouth).
Masseter
24
Together: flex the head
forward.
Individual: bendotate
the head laterally.
forward.
Individual: bendotate
the head laterally.
Sternocleidomastoid
25
Chief muscle of
respiration
respiration
Diaphragm
26
Compresses abdomen
(aids in defecation,
urination, childbirth).
(aids in defecation,
urination, childbirth).
Rectus Abdominis
27
Compresses abdomen,
bends & rotates vertebral
column laterally
bends & rotates vertebral
column laterally
External/Internal Oblique
28
Abducts arm, flexes and
extends the shoulder
extends the shoulder
Deltoid
29
Flexes shoulder, adducts
arm.
arm.
Pectoralis Major
30
Flexes and supinates the
forearm.
forearm.
Biceps Brachii
31
Extends forearm.
Triceps Brachii
32
Chief flexor of the hip.
Iliopsoas
33
Chief extensor of the hip.
Gluteus Maximus
34
Extends the knee
(Extensor muscles).
(Extensor muscles).
Quadriceps Femoris
Group
Group
35
Flexes the knee, extends
the hip (Flexor muscles).
the hip (Flexor muscles).
Hamstring Group
36
Extends (dorsiflexes)
ankle (foot).
ankle (foot).
Tibialis Anterior
37
(Plantar) flexes ankle
(foot).
(foot).
Gastrocnemius/Soleus
38
what is a human's Blood pH
Slightly alkaline, between pH 7.35–7.45
39
what is a human's Blood Temperature
38 ∘C or 100.4 ∘F
40
what is a human's Blood Volume
5–6 liters in a healthy adult
41
Blood makes up __ % of body weight
8
42
what is the bloods main function?
transports nutrients,
hormones, wastes,
body heat, O2 , and
CO2
hormones, wastes,
body heat, O2 , and
CO2
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