Exam 3 Week 11 Slides

Question 1

Approximately (blank) fatalities occur each year due to head injuries

Answer 1

140,000

Question 2

(blank) are automobile related injuries

Answer 2

1/2

Question 3

An estimated (blank) sports and recreated related concussions occur in the USA each year

Answer 3

3.8 million

Question 4

During (blank year) children ages (age) account for (number) sports related emergency department vistis annually, of which (blank percent / number) invovled concussion

Answer 4

1. 2001-2005
2. 5-18
3. 2.4 million
4. 6% (135,000)

Question 5

A concussion (also known as a mild traumatic brain injury mTBI) is

Answer 5

1. caused by a bump, blow, or jolt to either the head or the body -> causing the brain to move rapidly inside the skull
2. this cahnges how the brain normally functions, typically short-term unless repeated/chronic

Question 6

Brain Protection

Answer 6

1. Skull
2. Meninges (has 3 layers dura mater, arachnoid mater, pia mater)
3. Blood-bain barrier (limits access of blood-borne materials into brain tissue)
4. Cerebrospinal fluid (fluid surrounding CNS)

Question 7

Cerebral Spinal Fluid

Answer 7

Surrounds the brain and SPINAL CORD

Acts as shock-absorber to prevent brain from hitting skull

Exchanges materials between neural cells and intersitial fluid

Constant production and flow out of CNS and into venous system