Cartilage

tendon

scoliosis

ossification

The correct answer is C.

The skeletal system is responsible for storing fats and minerals, for producing red and white blood cells, for allowing movement, for providing structural support, and for protecting our internal organs.

C. responding to external stimuli

b. Osteoporosis

B

The correct answer is B.

Arthritis is characterized by inflamed joints that are often caused by the natural wear and tear during aging or by injuries and autoimmune diseases.

B. arthritis

The correct answer is B. A hairline fracture occurs when the parts of the bone do not detach or separate during a fracture.

B. two parts of the bone do not separate

The skull is a broad, flat bone that protects our brain. It also has a curved shape which provides structure to our face.

On the other hand, our arms contain long bones. They have this kind of shape because it is used for movement and locomotion. The long reach of our arms provides flexibility and a wider range of motion in order for us to manipulate objects with our hands.

Tendons and ligaments are the connective tissues that bind or hold the bones together in order to create movements. Tendons attach the muscles and bones together; hence, permitting body movement through muscle contraction.

On the other hand, the ligaments attach bones together and they form joints. Joints allow us to move our bodies in different ways! It even increases the flexibility of our body by widening the range or degree of our movements.

Sewing and typing involve prolonged, repeated movements. These movements can damage the tissues and cause the ligaments and tendons to swell. This event results in skeletal injuries.

Helmets are used to prevent or minimise head injuries in sports such as boxers, cricketers, football players, cyclists, skiers, baseball and motor sports. Face protection and mouth guards are often used among cricketers, boxers and hockey players to prevent fractures of facial bones. Mouth guards are also used in boxing, hockey, rugby, and squash. Pads and guards are used in any contact sport to prevent injuries of the neck, shoulders, chest, elbows, arms, wrists, hip, thighs, knees, shins and ankles. Protective clothes and footwear are uniquely designed for certain sports to prevent common injuries. For example, running shoes are designed for optimised pronation and minimise overuse of the feet and ankle joint.

Protective gear that can prevent possible injuries of the skeletal system include helmets, mouth guards, face protection, safety mats, pads and guards or protective footwear.

Getting regular physical activities during your teen years can help reduce the risk of getting osteoporosis when you grow old. Regular activities such as walking and jogging promote bone cell stimulation. When bone cells are stimulated, they increase the bone tissues and mass; hence, resulting in stronger bones.

The correct answer is flexor.

Flexor is a muscle that contracts in order to bend a certain part of the body. In this case, it is situated close to a joint.

The correct answer is cardiac.

Cardiac muscles are the striated tissues that are found in the heart.

The correct answer is smooth.

Smooth muscles are the involuntary muscles that line the internal organs and the body’s passageways.

The correct answer is hernia.

A hernia occurs when a certain organ pushes through a weak area in the muscles or tissues. You can get a hernia if you strain yourself when lifting a very heavy object.

The correct answer is tendinitis.

Tendinitis is a condition that is characterized by inflamed tendons due to overuse, natural aging, infection, or rheumatic disease.

The correct answer is D.

Smooth muscles are not striated. Skeletal (extensor and flexor) and cardiac muscles are the types of muscle that appear striated under a microscope.

D. smooth

The correct answer is A.

Smooth muscles are the involuntary muscles that line the internal organs and the body’s passageways.

A. in the digestive tract

The correct answer is B.

Getting regular physical exercise promotes strong and healthy muscles. Physical activities help maintain muscle tone.

B. Getting regular physical exercise

The correct answer is C.

Muscular dystrophy is a genetic disorder that is characterized by the progressive damage or degeneration of the muscles.

C. muscular dystrophy

The muscular system works with the following body systems:

1. Skeletal system: Muscles are attached to the bones in order to make our bodies move.

2. Nervous system: The muscles react when the nervous system directs a motor response once a stimulus is detected.

3. Circulatory system: The heart that pumps blood in our circulatory system is a muscle.

4. Digestive system: The muscles allow movement of the digestive organs during mechanical digestion.

5. Respiratory system: The movement of the diaphragm muscles allow the lungs to inflate and deflate.

When we experience a muscle strain, the pain increases as we move or stretch the affected muscle. When we pull our legs into our body, our thigh muscles flex or shorten. This movement is less painful unlike extending it.

Muscular dystrophy is a genetic disorder that is characterized by the progressive damage or degeneration of the muscles. It is important for children to be screened for muscular dystrophy because early detection can slow down the progression of the disease.

Doing physical activities or exercises that use our muscles would promote muscle strength. Moreover, it helps increase muscle mass and maintain muscle tone. If a person does not exercise, then it may lead to muscle weakness. This condition may lead to injury and accidents.

The cerebellum is the part of the brain which is involved in the movement of our skeletal muscles.

Cerebellum

The cerebrum is the seat of our thoughts, voluntary actions, learning, and memory.

Cerebrum

The part of the central nervous system that is responsible for breathing and heartbeat is the brain stem.

Brain stem

Epilepsy is a neurological disorder that is characterized by the sudden episodes of abnormal electrical activities in the brain. This event causes seizures, unusual behaviors, and loss of awareness or consciousness.

Epilepsy

Cerebral palsy is a group of disorders that permanently affect the motor skills of an individual. It usually occurs before birth, during infancy, or in the early childhood stage.

Cerebral palsy

The correct answer is A. The brain stem consists of the medulla oblongata, pons, midbrain, thalamus, and hypothalamus.

A. Cerebellum

The correct answer is D. When the spinal cord is severed, it could cause a nerve damage. This condition often leads to paralysis.

D. paralysis

The correct answer is B. Examples of degenerative diseases include Alzheimer’s disease, multiple sclerosis, and Parkinson’s disease.

B. Cerebral palsy

The correct answer is C.

Epilepsy is a neurological disorder that is characterized by the sudden episodes of abnormal electrical activities in the brain. This event causes seizures, unusual behaviors, and loss of awareness or consciousness.

C. epilepsy

The central nervous system (CNS), which consists of the brain and the spinal cord, acts as the command or control center of the body. This means that they are the ones sending and receiving the impulses. On the other hand, the peripheral nervous system (PNS) is composed of the spinal and cranial nerves that branch out from the brain and spinal cord then into the other parts of the body. This system is compared to a messenger who is employed to send the messages into their respective designations.

These two systems work together in such a way that the peripheral nervous system carries the messages between the CNS (brain and spinal cord) and the rest of the body. Let us take the motor response to a pain stimulus. When you touch a very hot object, your sensory neurons would send a signal to the brain (CNS) that you touched something hot. In turn, the brain will process the information and send out a response. This response is carried by the PNS into the motor neuron, then into the muscles. As a result, your muscles will react and it will make you move or pull your hand away from the hot object.

These two systems work together in such a way that the peripheral nervous system carries the messages between the CNS (brain and spinal cord) and the rest of the body. Let us take the motor response to a pain stimulus. When you touch a very hot object, your sensory neurons would send a signal to the brain (CNS) that you touched something hot. In turn, the brain will process the information and send out a response. This response is carried by the PNS into the motor neuron, then into the muscles. As a result, your muscles will react and it will make you move or pull your hand away from the hot object.

The brain and spinal cord are protected by layers of cranial meninges and cerebrospinal fluid, which act as a cushion that absorbs shock in order to prevent severe injuries.

Axons, a long threadlike part of a neuron, transmits impulses away from the cell body into the other cells.

On the other hand, dendrites are the short-branched structures that extend from the cell body. They are responsible for receiving information and impulses toward the cell body.

Degenerative diseases are difficult to diagnose and to treat because they have a slow progressive nature; hence, taking many years before the symptoms can be obvious. Most of these diseases have no cure and the treatment available is only for slowing down their progression. Moreover, tracking the progress of whether the drug or treatment works could take several years.

If our brain would detect this kind of stimuli, then it would create a fight-or-flight response, which causes our heart rate to shoot up and our blood vessels to dilate. This response prepares us to react whenever we are facing a potentially dangerous situation.

It is important to wear protective gear in order to protect our body from severe dive-related injuries. Moreover, checking the depth of the water before diving can prevent accidents and deaths from happening.