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human anatomy > Exam 3(part one) > Flashcards

Exam 3(part one) Flashcards

The muscle portion of the test

1
Q

Define muscles

A

Organs composed of specialized cells that generate force

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2
Q

What are the three types of muscles

A

Cardiac, skeletal, and smooth

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3
Q

What complements muscle fibers

A

Layers of connective tissue and multiple blood vessels and nerves

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4
Q

What is teh connective tissue covering in order

A

Endomysium, Fascicle, Perimysium, Epimysium, tendons, and Aponeurosis

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5
Q

Whare the names of the cell membrane and cytoplasm of the muscle fiber

A

Sarcoplasm for cytoplasm and Sarcolemma cell membrane

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6
Q

What structure does sarcoplasm have?

A

Myofibrils-long parallel structures

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7
Q

What are the two prinicpal proteins of myfibrils

A

thin filaments of Actin and thick filaments of myosin

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8
Q

What causes the striation pattern

A

Sarcomeres( A-bands and I-bands)

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9
Q

Describe I-bands

A

Thin filaments of actin that are lighter in color

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10
Q

Describe A-bands

A

Thick filaments of myosin that are darker in color with h-zone in the middle

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11
Q

What are myosin filaments attached by?

A

Connectin or actin

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12
Q

What are the two regulatory proteins?

A

Troponin and Tropomyosin

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13
Q

Describe muscle contraction

A

An interaction of cellular and chemical constituents.

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14
Q

What components are used in contraction?

A

myofibrils, actin and myosin filaments

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15
Q

What is a synapse ( check note might be wrong)

A

The site of this functional connection to the end of axon

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16
Q

How do neuron communicate

A

They release neurotransmitter at the synapse

17
Q

What are motor neurons

A

Neurons that control effectors

18
Q

What is a neuromuscular junction

A

The synapse where a motor neuron axon and a skeletal muscle fiber meet.

19
Q

What is a motor end plate

A

muscle fiber membrane

20
Q

What does Acetylcholine do and where is synthesized

A

It is synthesized in the cytoplasm and is a neurotransmitter that motor neurons use to control skeletal muscle

21
Q

The Description and location of at least two muscles of facial expression

A

Zygomaticus major and minor
Beneath skin of face and scalp: used to communicate feeling through facial expression.

22
Q

The Description and location of at least two muscles of muscles of mastification

A

Medial and laterial pterygoid
Muscle attached to mandible and used for chewing

23
Q

The Description and location of at least two muscles of muscles that move head and vertebral column

A

Splenious and Semispinalis capitis
Muscles in neck and back of head

24
Q

The Description and location of at least two muscles of muscles that move pectoral girdle

A

Rhomboid major and minor
Most are connect scapula to nearby bones and associated with muscles that move arm

25
Q

The Description and location of at least two muscles of muscles that move arms

A

Teres major and minor
Muscles connected to pectoral girdle, ribs, and vertebral column

26
Q

The Description and location of at least two muscles of muscles that move forearm

A

supinator and biceps brachii
Connect radius and ulna to humerous and pectoral girdle

27
Q

The Description and location of at least two muscles of muscles of pelvic floor and perineum

A

Coccygeus and levator ani
Form the floor of pelvic cavity and fill space in the public arch

27
Q

The Description and location of at least two muscles of muscles of abdominal wall

A

External and internal oblique
Connect rib cage and vertabral column to pectoral gridle

28
Q

The Description and location of at least two muscles of muscles that move the thigh

A

Gluteus maximum and medius
Attached to femur and to some portion of pelvic girdle; can be separated into anterior medial posterior

29
Q

The Description and location of at least two muscles of muscles that move leg

A

Bicep femoris and rectus femoris
Connect tibulia or fibula to femur or pelvic girdle

30
Q

The Description and location of at least two muscles of muscles that move foot

A

Soleus and Plantaris
Attach femur tibia , femur to various bones of the feet

human anatomy (6 decks)

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