Question

Part A Drag the labels onto the diagram to identify the different influences on blood calcium levels. CALCIUM BALANCE IN THE BODY al To maintain calciun balance, dietary intake should equal Ca2 loss in the urine and feces Small intestine Ca2+ Dietary Calcium in feces PTH, Calcitricl, Cortisol ?Some calcium is secreted into the small intestine. Extracellular matrix of bone and teeth ECF1Passive Bone Ca 25 mM Ca+in kidney tubules Calcitonin Extracellular matrix gradient transport Muscle contraction [free Ca 0001 mM n unine Cells 09% Ca2+ stimulated by PTH Ca2+ reabsorption inhibited by lb) Functions of caium in the body Location release at synapse Calcitriol (PTH, prolactin) Role in myocandial and smooth muscle contraction Cofactor in coagulation cascade Cement for tight junctions Influences excitability of neurons Intracellular Ca2+ Signal in second messenger pathways Reset Help

Answer 1

a) left column from up to down

• Calcitriol
• Calcitonin
• PTH, calitriol,cortisol

Right column. from up to down\

• PTH (+)
• Calcitonin(-)

b)

Location	Function
Extracellular matrix	Calcified matrix of bone and teeth
Extracellular flui Ca2+	Neurotransmitter release at the synapse
Intracellular Ca2+	Muscle contraction