Histology; Muscle Tissue Photos

Question 1

Answer 1

skeletal muscle

Question 2

Answer 2

skeletal muscle (cross section)

Question 3

Answer 3

cardiac muscle (longitudinal)

Question 4

Answer 4

cardiac muscle (cross section)

Question 5

Answer 5

smooth muscle
*not 2 images; remember they run in different orientations in different planes

Question 6

Answer 6

skeletal muscle striations

Question 7

Answer 7

Skeletal Muscle

1. sarcolemma
2. mitochondrion
3. myofibril
4. nucleus
5. light; I band
6. dark; A band

Question 8

Answer 8

1. Z disc
2. H zone
3. M line
4. I band
5. A band
6. Sarcomere
7. thick (myosin) filament
8. thin (actin) filament

Question 9

Answer 9

1. z disc
2. M line
3. thick (myosin) filaments
4. elastic (titin) filaments
5. thin (actin) filaments

Question 10

Answer 10

skeletal muscle; sarcomere

Question 11

Answer 11

1. sarcoplasm
2. myofibrils
3. sarcomere
4. nucleus
5. cell membrane (sarcolemma)

Question 12

Answer 12

1. I band
2. A band
3. Z disc
4. H zone
5. M line

Question 13

what state is the muscle is

Answer 13

relaxed muscle state

Question 14

what state is the muscle in

Answer 14

partially contracted muscle state

Question 15

what state is this muscle in

Answer 15

fully contracted muscle state

Question 16

Answer 16

1. sarcolemma
2. triad
3. mitchondria
4. myofibrils
5. tubules of sarcoplasmic reticulum
6. terminal cisterna of SR
7. T tubule

Question 17

Answer 17

1. myofilaments
2. terminal cisternae SR
3. t-tubule
4. sarcoplasmic reticulum

Question 18

Answer 18

neuromuscular junction

Question 19

Answer 19

1. axon terminal of motor neuron
2. mitochondrion
3. synaptic cleft
4. t tubule
5. junctional folds at motor plate
6. myofibril

Question 20

Answer 20

cardiac muscle; intercalated discs

Question 21

Answer 21

smooth mucsle (illeum cross section)

Question 22

Answer 22

smooth muscle (SI)