What structures of the skull form the cheek bones?

What structures of the skull form the cheek bones?

A patient presents to the ER complaining of "pain in his heart." When the nurse asks him to point to the area that he feels the pain, he places his finger on the bony protuberance just below his rib cage. Seeing this, the nurse has reason to suspect that his pain may be gastrointestinal or musculoskeletal in origin as well as cardiac. What bony protuberance is this patient likely touching?

A patient presents to the ER complaining of "pain in his heart." When the nurse asks him to point to the area that he feels the pain, he places his finger on the bony protuberance just below his rib cage. Seeing this, the nurse has reason to suspect that his pain may be gastrointestinal or musculoskeletal in origin as well as cardiac. What bony protuberance is this patient likely touching?

Which of the following is the smallest unit of contractile tissue in cardiac and skeletal muscle cells?

Which of the following is the smallest unit of contractile tissue in cardiac and skeletal muscle cells?

All of the following features are unique to cardiac muscle cells except:

All of the following features are unique to cardiac muscle cells except:

Which of the following molecules binds to troponin during muscle contraction, triggering tropomyosin to move away from the actin binding sites and allowing the myosin head to form a cross bridge?

Which of the following molecules binds to troponin during muscle contraction, triggering tropomyosin to move away from the actin binding sites and allowing the myosin head to form a cross bridge?