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What is the luster ? Streak = dark gray hardness = 2.5 

What is the luster ? Streak = reddish-brown Hardness = 1.5-6

What is the name of this specimen ? This sample taste salty Hardness = 2.5    

What is the name of this specimen? (Note: The specimen reacts to acid)  Streak = white Hardness = 3 

What is the name of this specimen ? Streak= white to gray hardness = 2.5-3  

What is the mineral composition of this rock? (Note: This specimen reacts with acid)   Hardness = Less then 5.5 

What lymph/endocrine gland has hormone that process T-cell lymphocytes to make them  immune competent?

Inguinal lymph nodes are in the _____________________.

Which part of the vascular system functions as a blood reservoir and contains over 60% of the body’s blood?

Which of the following parts of the lymph node are A&B?