When unresisted elbow extension against gravity is required, which of the elbow extensors is/are active?
What will be an ideal response?
ANS:
The medial head of the triceps is the first of the three heads of the triceps to be recruited. The lateral head joins the medial head with any need for additional force. The long head will come in only when additional force is necessary, or when simultaneous shoulder extension is desired. The anconeus, as a one-joint elbow extensor, is presumed to be active during most active elbow extension tasks.
You might also like to view...
The calculation made by subtracting the age at death from 65 produces what is called ________________________ ________________________ ________________________ ________________________
Fill in the blank(s) with correct word
Unit equipment includes a bed, privacy curtain, and chair.
Answer the following statement true (T) or false (F)
You are the first emergency personnel on the scene of an overturned tanker truck. The driver is in the cab and appears motionless. It also appears that a liquid is leaking from the rear-valve assembly of the tanker. After properly positioning your ambulance, your immediate priority should be to:
A) attempt to determine what chemical is contained in the tanker. B) take manual inline spinal stabilization. C) evacuate people from cars near the tanker. D) perform the primary assessment on the truck driver.
What has the primary responsibility for sensing and responding to changes in blood levels of CO2?
a. Apneustic centers b. Central chemoreceptors c. Peripheral chemoreceptors d. Pneumotaxic center