Question 1

After partying with friends one night, Angela got into her car to drive herself home. She had been drinking and was involved in a tragic accident. The doctors at the hospital kept Angela alive on life support systems until her parents arrived. They explained to Angela's grief stricken parents that this structure of the brain had been damaged and without life support she would die. This structure is the _____________.

Accepted Answer

The medulla is a part of the brainstem that controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion. Damage to the medulla can result in the loss of these critical functions, necessitating life support to keep the individual alive.

Question 2

The reticular formation is considered to be the "brain's gatekeeper" because

Accepted Answer

The reticular formation is involved in filtering incoming sensory information and deciding which signals are important enough to be sent to the conscious mind, thus acting as a gatekeeper for sensory information.

Question 3

While the hypothalamus is known to play a role in the formation of motivational and emotional urges, it is thought that the coordination of the behaviours needed to satisfy these urges is performed by the _______.

Accepted Answer

The limbic system is responsible for coordinating behaviors needed to satisfy motivational and emotional urges, working in conjunction with the hypothalamus. It includes structures such as the amygdala and hippocampus, which play key roles in emotion and memory, respectively.

Question 4

The function of the descending reticular formation is to

Accepted Answer

The descending reticular formation plays a crucial role in modulating pain and controlling the flow of sensory information to the brain, essentially acting as a gatekeeper to either block out or admit sensory signals.

Question 5

Judith has noticed that her elderly husband is behaving differently lately. His movements have become uncoordinated, jerky, and clumsy, and he even has difficulty walking or getting up from a chair. These symptoms are most likely related to a tumour in the

Accepted Answer

The cerebellum is responsible for coordinating voluntary movements, balance, and posture. Symptoms such as uncoordinated, jerky, and clumsy movements, along with difficulty walking or getting up from a chair, are indicative of cerebellar dysfunction, which could be caused by a tumor in this area.

Question 6

Research, like that conducted by Roy Wise of Concordia University in Montreal, has provided evidence that the area in the brain important for the value of reward and motivation is

Accepted Answer

The nucleus accumbens is known to play a central role in the reward circuit. Its operation is associated with the release of dopamine, which is a neurotransmitter involved in reward and pleasure sensations, as well as motivation.

Question 7

Though it was discussed in the context of the nervous system, the hypothalamus also plays an important role in the endocrine system because of its connection with the

Accepted Answer

The hypothalamus is directly connected to the pituitary gland, which plays a crucial role in the endocrine system by secreting hormones that regulate many bodily functions.

Question 8

The primary job of the amygdala is to

Accepted Answer

The amygdala is primarily responsible for processing emotions, especially those related to survival such as fear and aggression. It plays a key role in how we react to stimuli that could be threatening and in forming emotional memories.

Question 9

The memory of a woman is substantially impaired after she injures her head falling off of a ladder. In particular, she is unable to remember recent events that have happened to her. Damage to which of the following brain areas is most likely responsible for these difficulties?

Accepted Answer

The hippocampus is crucial for the formation of new memories. Damage to this area can result in difficulties in forming new memories or remembering recent events, a condition known as anterograde amnesia.

Question 10

The role of the thalamus in brain functioning has been compared to a

Accepted Answer

The thalamus acts as a relay station or switchboard in the brain, directing sensory and motor signals to the appropriate areas of the cortex and regulating consciousness, sleep, and alertness.

Question 11

One of the primary functions of the thalamus is to

Accepted Answer

The thalamus acts as a relay station in the brain, organizing sensory information from the sense organs (except for smell) and routing it to the appropriate areas of the brain for processing.

Question 12

Wilder Penfield's pioneering work involved the mapping of the body onto the brain for motor control and the sense of touch using the method of _______.

Accepted Answer

Wilder Penfield's pioneering work involved the use of destruction and stimulation techniques to map the body onto the brain for motor control and the sense of touch. He is famous for his development of the cortical homunculus, a visual representation of the concept of the body being mapped onto the brain, which he achieved through electrical stimulation of the brain during neurosurgery.

Question 13

The primary job of the ascending reticular formation is to

Accepted Answer

The ascending reticular formation is involved in alerting the brain to incoming information, playing a key role in arousal and consciousness.

Question 14

Research on schizophrenia has found that men with this disorder have abnormalities that might account for their confused thinking and disordered attention. These abnormalities tended to occur in their _______________.

Accepted Answer

The thalamus is involved in processing and relaying sensory information to other parts of the brain, and abnormalities in this region can contribute to the confused thinking and disordered attention observed in schizophrenia.

Question 15

The basal ganglia plays an important role in

Accepted Answer

The basal ganglia are primarily involved in the regulation and initiation of voluntary movements, as well as motor control and learning.

Question 16

Julie was a concert pianist until she was in a serious skiing accident. As a result, she was no longer able to control the timing and coordination of her motor movements. She had sustained severe damage to her _________________.

Accepted Answer

The cerebellum is responsible for coordinating voluntary movements, including timing and precision, which explains Julie's symptoms following her accident.

Question 17

At a local university the freshman hazing involved chugging bottles of vodka. When two naïve young men fell unconscious after finishing the bottles of vodka, their girlfriends rushed them to the emergency room. It seems their basic body functions had been suppressed by the alcohol and they died from heart failure. Which portion of the brain governs these vital body functions?

Accepted Answer

The medulla, part of the brainstem, controls vital body functions such as heart rate and breathing, which can be suppressed by excessive alcohol consumption leading to fatal outcomes.

Question 18

Which of the following are among the functions affected by the hypothalamus?

Accepted Answer

The hypothalamus is involved in regulating sexual behavior, temperature, and sleep, among other functions.

Question 19

A male rat has a particular area of its brain destroyed and it subsequently loses its sex drive. It is most likely that the site of damage was the rat's _______________.

Accepted Answer

The hypothalamus plays a crucial role in regulating sexual behavior and motivation, among other functions such as hunger, thirst, and the body's internal clock. Damage to this area can lead to a loss of sex drive.

Question 20

Two important structures in the limbic system are

Accepted Answer

The hippocampus and the amygdala are key components of the limbic system, involved in memory and emotion processing, respectively.

Quiz 3: Biological Foundations of Behaviour