Week 6 Worksheet (2)

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Iowa State University *

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MISC

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Biology

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Feb 20, 2024

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docx

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3

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Week 6 Worksheet Fill out worksheet on your computer and upload to CANVAS before the due date **Lab instructors will award points based on a good-faith effort to fill out worksheet. They will NOT be grading for correctness. It is ultimately your responsibility to make sure your answers are correct so that this will be a useful study guide for your weekly test. Therefore, make sure you ask your instructor, undergrad TAs, and your peers for help when you need it. ** South Tables Clay Model What is the deepest quadriceps muscle? Vastus intermedium What is the most superficial quadriceps muscle? Rectus femoris Which hamstring muscle is most lateral? Biceps femoris I have shown my completed model to the TA Insertion and Origins of Quadriceps and Hamstring muscles Where do the hamstring muscles have their proximal insertion site? It is on the upper part of the tibia near the tibial tuberosity Where is the proximal insertion site for the rectus femoris? The patella and tibial tuberosity Which rotator cuff muscle inserts on the lesser tubercle of the humerus? The subscapularis *Can you identify all of the bony features learned in Week 4 that are relevant to the three major muscle groups on the clay models? The femur, tibia, fibula, and the pelvis Muscle Model Model What is the shape of the sarcoplasmic reticulum? Why is it shaped in this manner? It is shaped like a cuff like structure Do you see mitochondria within the myofibrils on the model? Why or why not? Yes, there are groups of nuclei and some mitochondria that are in the cell What color on the model corresponds to the Z disc (boundary between sarcomeres)? The red ones Looking at the neuromuscular junction on the cell model, which two places might you find acetylcholine? (Hint: where is it stored and where would it be during signaling?) You would find them at they synapses in the ganglia of the visceral motor system. *Can you identify all of the important structures of the muscle cell and neuromuscular junction? The presynaptic vesicles , the synaptic cleft, the postsynaptic membrane with neurotransmitter receptors
North Tables Cat Dissection What are the two most superficial muscles of the anterior upper hindlimb? Clavicle and the deltoid Are the adductor longus and adductor femoris best described as anterior, posterior, medial, or lateral? The adductor longus and the adductor femoris are medial What is the largest hamstring muscle? Is it medial or lateral? The largest hamstring which is the semimembranosus is medial Which of the hamstring muscles can be seen in the antero-medial view of the hindlimb? Vastus lateralis and the vastus medialis that are attached to the tibial tuberosity. Which two muscles attach to the calcaneus via the calcaneal tendon? Which is superficial and which is deep? Gastrocnemius and soleus, the soleus is the superficial and the gastrocnemius is the deep Is the tibialis anterior medial or lateral to the exposed tibia? The tibialis anterior muscle is from the lateral condyle of the tibia and would be considered on the lateral side. *Can you identify all of the muscles that were dissected on the cat? Sartorius Gracilis Rectus femoris Vastus mesialis Vastus lateralis Vastus intermedium Adductor longus Adductor femoris Semimembranosus Semitendinosus Biceps femoris Gastrocnemius Soleus Calcaneal tendon Tibial anterior
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