The cytosol contains a high concentration of potassium ions, while the extracellular fluid usually contains a high concentration of ________ ions.
Fill in the blank(s) with the appropriate word(s).
sodium
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T cells:
a. are important in long-term immunity because they form memory cells b. can release as many as 2000 antibodies a second c. can release poisons that can directly kill cells d. form plasma cells when activated
Name the three types of muscle tissue, identify where they are found, and list their functions
A) Skeletal muscle is directly or indirectly attached to bones and enables movement of the body. Cardiac muscle forms the heart and propels blood. Smooth muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. B) Skeletal muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Cardiac muscle forms the heart and propels blood. Smooth muscle is directly or indirectly attached to bones and enables movement of the body. C) Skeletal muscle forms the heart and propels blood. Cardiac muscle is directly or indirectly attached to bones and enables movement of the body. Smooth muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. D) Skeletal muscle is directly or indirectly attached to bones and enables movement of the body. Cardiac muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Smooth muscle forms the heart and propels blood. E) Skeletal muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Cardiac muscle is directly or indirectly attached to bones and enables movement of the body. Smooth muscle forms the heart and propels blood.
The mandible articulates with what other cranial bones?
A) left and right parietal bones B) sphenoid and ethmoid bones C) left and right zygomatic bones D) left and right temporal bones E) maxillae
Which structure articulates with the acetabulum?
A) tibial tuberosity B) intercondylar eminence C) gluteal tuberosity D) greater trochanter E) head of the femur