Exam 3(part one)

Question 1

Define muscles

Answer 1

Organs composed of specialized cells that generate force

Question 2

What are the three types of muscles

Answer 2

Cardiac, skeletal, and smooth

Question 3

What complements muscle fibers

Answer 3

Layers of connective tissue and multiple blood vessels and nerves

Question 4

What is teh connective tissue covering in order

Answer 4

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

Question 5

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

Answer 5

Sarcoplasm for cytoplasm and Sarcolemma cell membrane

Question 6

What structure does sarcoplasm have?

Answer 6

Myofibrils-long parallel structures

Question 7

What are the two prinicpal proteins of myfibrils

Answer 7

thin filaments of Actin and thick filaments of myosin

Question 8

What causes the striation pattern

Answer 8

Sarcomeres( A-bands and I-bands)

Question 9

Describe I-bands

Answer 9

Thin filaments of actin that are lighter in color

Question 10

Describe A-bands

Answer 10

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

Question 11

What are myosin filaments attached by?

Answer 11

Connectin or actin

Question 12

What are the two regulatory proteins?

Answer 12

Troponin and Tropomyosin

Question 13

Describe muscle contraction

Answer 13

An interaction of cellular and chemical constituents.

Question 14

What components are used in contraction?

Answer 14

myofibrils, actin and myosin filaments

Question 15

What is a synapse ( check note might be wrong)

Answer 15

The site of this functional connection to the end of axon

Question 16

How do neuron communicate

Answer 16

They release neurotransmitter at the synapse

Question 17

What are motor neurons

Answer 17

Neurons that control effectors

Question 18

What is a neuromuscular junction

Answer 18

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

Question 19

What is a motor end plate

Answer 19

muscle fiber membrane

Question 20

What does Acetylcholine do and where is synthesized

Answer 20

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

Question 21

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

Answer 21

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

Question 22

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

Answer 22

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

Question 23

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

Answer 23

Splenious and Semispinalis capitis
Muscles in neck and back of head

Question 24

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

Answer 24

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

Question 25

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

Answer 25

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

Question 26

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

Answer 26

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

Question 27

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

Answer 27

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

Question 27

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

Answer 27

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

Question 28

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

Answer 28

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

Question 29

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

Answer 29

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

Question 30

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

Answer 30

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