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web.groovymark@gmail.com
- December 12, 2024
Question 41
Where does most neural activity occur in the infant brain?
a) Brainstem
b) Cortex
c) Cerebellum
d) Hippocampus
Correct Answer: b) Cortex
Explanation: Most neural activity in the infant brain takes place in the cortex, which is responsible for higher-order brain functions such as cognition, perception, and movement.
Question 42
How many hemispheres does the brain cortex have?
a) One
b) Two
c) Three
d) Four
Correct Answer: b) Two
Explanation: The brain’s cortex is divided into two hemispheres, each responsible for different functions but also working together to control the body.
Question 43
How many lobes are in each hemisphere of the brain?
a) Two
b) Four
c) Six
d) Eight
Correct Answer: b) Four
Explanation: Each hemisphere of the brain has four lobes: frontal, parietal, occipital, and temporal, each associated with different functions.
Question 44
What are the folds separating the lobes called?
a) Synapses
b) Gyri
c) Fissures
d) Neurons
Correct Answer: c) Fissures
Explanation: Fissures are deep grooves or folds in the brain that separate the different lobes within each hemisphere.
Question 45
What is the average amount of sleep for a newborn?
a) 12 hours
b) 8 hours
c) 16.5 hours per 24-hour period
d) 10 hours
Correct Answer: c) 16.5 hours per 24-hour period
Explanation: Newborns typically sleep around 16.5 hours per day, which is essential for their rapid growth and brain development.
Question 46
What percentage of sleep time do newborns spend in the REM phase?
a) 20%
b) 50%
c) 75%
d) 30%
Correct Answer: b) 50%
Explanation: Newborns spend about 50% of their sleep time in the REM (rapid eye movement) phase, which is important for brain development.
Question 47
What are the grasping and stepping reflexes eventually replaced by?
a) Gross motor skills
b) Fine motor skills
c) More voluntary behaviors
d) Sensory processing
Correct Answer: c) More voluntary behaviors
Explanation: The grasping and stepping reflexes seen in newborns eventually develop into more voluntary motor behaviors as the child grows.
Question 48
Which reflexes disappear within the first few months of life?
a) Eye-blink and swallowing reflexes
b) Grasping and stepping reflexes
c) Sneezing and coughing reflexes
d) Yawning and stretching reflexes
Correct Answer: b) Grasping and stepping reflexes
Explanation: The grasping and stepping reflexes are common in newborns but typically disappear within the first few months of life as motor skills develop.
Question 49
Which reflexes remain and serve important functions?
a) Eye-blink, swallowing, sneezing
b) Grasping and stepping reflexes
c) Crawling reflex
d) Rooting reflex
Correct Answer: a) Eye-blink, swallowing, sneezing
Explanation: Reflexes such as eye-blinking, swallowing, and sneezing are essential for survival and remain throughout life.
Question 50
What is the pincer grasp?
a) Ability to grasp an object using the entire hand
b) Ability to grasp an object using the forefinger and thumb
c) Reflex that causes a baby to hold onto a finger
d) Ability to grasp an object with only the palm
Correct Answer: b) Ability to grasp an object using the forefinger and thumb
Explanation: The pincer grasp is a fine motor skill where an infant uses the thumb and forefinger to pick up small objects, typically developing around 9-12 months.
