Question

additional exercises
now, test yourself!
in problems 1 through 15, identify the type of syringe shown in the figure.
then, for each quantity, place an arrow at the appropriate level of measurement on the syringe.

1. __________ syringe; 66 units
2. __________ syringe; 21 units

208 chapter 7 syringes

1. __________ syringe; 1.4 ml

workspace

1. __________ syringe; 1.4 ml
2. __________ syringe; 8.3 ml

Explanation:

Step1: Identify syringe 1 type

This is an insulin syringe (marked in 10-unit increments, total 100 units, standard for insulin). To mark 66 units: each major tick (10 units) has 2 minor ticks, so each minor tick = 5 units. 66 units is 1 minor tick past 60 units.

Step2: Identify syringe 2 type

This is a tuberculin (low-dose) syringe (marked in 5-unit increments, total 30 units, for small unit doses). To mark 21 units: each major tick (5 units) has 5 minor ticks, so each minor tick = 1 unit. 21 units is 1 minor tick past 20 units.

Step3: Identify syringe 3 type

This is a 10 mL standard syringe (marked in 1 mL major increments, each split into 2 minor ticks, so each minor tick = 0.5 mL). To mark 1.4 mL: it is 4 minor ticks past 1 mL (1 + (4*0.1) = 1.4, as each small tick = 0.1 mL).

Step4: Identify syringe 4 type

This is a 3 mL precision syringe (marked in 0.5 mL major increments, each split into 10 minor ticks, so each minor tick = 0.05 mL). To mark 1.4 mL: it is 8 minor ticks past 1 mL (1 + (8*0.05) = 1.4).

Step5: Identify syringe 5 type

This is a 10 mL standard syringe (matches syringe 3's scale). To mark 8.3 mL: it is 3 minor ticks past 8 mL (8 + (3*0.1) = 8.3).

Answer:

1. Insulin syringe; Arrow placed 1 minor tick past the 60-unit mark
2. Tuberculin (30-unit) syringe; Arrow placed 1 minor tick past the 20-unit mark
3. 10 mL standard syringe; Arrow placed 4 minor ticks past the 1 mL mark
4. 3 mL precision syringe; Arrow placed 8 minor ticks past the 1 mL mark
5. 10 mL standard syringe; Arrow placed 3 minor ticks past the 8 mL mark