1.
Which sensory receptor detects pressure and movement?
Correct Answer
A. Mechanoreceptors
Explanation
Mechanoreceptors are sensory receptors that detect pressure and movement. These receptors are responsible for detecting physical stimuli such as touch, vibration, and pressure. They are found in various parts of the body, including the skin, muscles, and organs. Mechanoreceptors play a crucial role in our ability to sense and perceive our surroundings, allowing us to feel sensations like texture, pressure, and movement.
2.
The_____detects change in temperature.
Correct Answer
thermoreceptors
Explanation
Thermoreceptors are sensory receptors that detect changes in temperature. They are specialized nerve cells located in the skin, organs, and other tissues throughout the body. When there is a change in temperature, thermoreceptors send signals to the brain, which then interprets and responds to the temperature change. These receptors play a crucial role in maintaining body temperature and regulating our response to hot and cold stimuli.
3.
Pain receptors detect tissue damage.
Correct Answer
A. True
Explanation
Pain receptors, also known as nociceptors, are specialized sensory receptors that detect and respond to potentially harmful stimuli, such as tissue damage. When tissue is injured or damaged, these receptors send signals to the brain, resulting in the perception of pain. Therefore, it is true that pain receptors detect tissue damage.
4.
Which receptor detects chemical concentration changes?
Correct Answer
B. Chemoreceptors
Explanation
Chemoreceptors are receptors that detect changes in chemical concentrations. They are responsible for detecting and responding to chemical stimuli such as taste and smell. Unlike pain receptors, which detect pain, chemoreceptors specifically detect chemical changes in the environment. Therefore, chemoreceptors are the correct answer for this question.
5.
Photo receptors detects
Correct Answer
light energy
Explanation
Photo receptors are specialized cells that are sensitive to light energy. They are found in the retina of the eye and are responsible for detecting and converting light energy into electrical signals that can be interpreted by the brain. These electrical signals are then processed by the brain to form visual images. Therefore, the correct answer is "light energy" because photo receptors detect this specific type of energy.
6.
Rods and cones are types of?
Correct Answer
photoreceptors
Explanation
Rods and cones are types of photoreceptors. Photoreceptors are specialized cells in the retina of the eye that are responsible for detecting and responding to light. Rods are more sensitive to dim light and are responsible for peripheral vision and black-and-white vision. Cones, on the other hand, are responsible for color vision and are more sensitive to bright light. Together, rods and cones play a crucial role in our visual perception.
7.
Rods
Correct Answer(s)
A. Sensitive to light
B. Night vision
8.
Cones detect details and colors.
Correct Answer
A. True
Explanation
Cones are photoreceptor cells in the retina of the eye that are responsible for detecting details and colors. They are responsible for our ability to see fine details and perceive different colors. Therefore, the statement that cones detect details and colors is true.
9.
Pinna auricle and auditory canal.
Correct Answer
outter ear
Explanation
The given correct answer, "outter ear," is a misspelling of "outer ear." The outer ear consists of the pinna (also known as the auricle) and the auditory canal. The pinna is the visible part of the ear that helps in collecting sound waves and directing them into the auditory canal. The auditory canal is a tube-like structure that carries the sound waves from the pinna to the middle ear. Together, the pinna and auditory canal form the outer ear, which is responsible for capturing and funneling sound into the ear canal.
10.
Contains malleus, incus, stapes.
Correct Answer
outter ear
Explanation
The given correct answer, "outter ear," is likely a misspelling of "outer ear." The outer ear consists of the visible part of the ear, known as the pinna, as well as the ear canal. It is responsible for collecting sound waves and directing them towards the middle ear. The malleus, incus, and stapes are actually part of the middle ear, not the outer ear. They are tiny bones that transmit sound vibrations from the eardrum to the inner ear.
11.
Filled with fluid, contains semicircular canal, vestibule, cochlea.
Correct Answer
inner ear
Explanation
The inner ear is a part of the ear that is filled with fluid and contains important structures such as the semicircular canal, vestibule, and cochlea. These structures are responsible for maintaining balance and hearing. The semicircular canal helps detect rotational movements, the vestibule helps detect changes in head position, and the cochlea is involved in the process of hearing. Therefore, the inner ear is the correct answer as it encompasses all these components.
12.
A type of proprioceptor involved in reflex actions.
Correct Answer
mechanoreceptors
Explanation
Mechanoreceptors are a type of proprioceptor involved in reflex actions. These receptors are responsible for detecting mechanical stimuli such as pressure, touch, and vibration. They are found throughout the body, including in the skin, muscles, and organs. When these mechanoreceptors are stimulated, they send signals to the brain and spinal cord, which then initiate reflex actions to protect the body or maintain balance. Therefore, mechanoreceptors play a crucial role in our ability to sense and respond to our environment.
13.
Maintains muscle tone and body equilibrium and posture.
Correct Answer
C. Propireceptors
Explanation
Proprioceptors are sensory receptors that provide information about body position, muscle tone, and joint movement. They are responsible for maintaining muscle tone and body equilibrium, as well as posture. These receptors are located in muscles, tendons, and joints, and they send signals to the brain, allowing us to have a sense of where our body is in space and to make adjustments to maintain balance and coordination. Thermoreceptors, on the other hand, detect temperature changes, while mechanoreceptors detect mechanical stimuli such as touch or pressure.
14.
The cutaneous receptor is not located in the dermis.
Correct Answer
B. False
Explanation
The statement is false because cutaneous receptors are indeed located in the dermis. Cutaneous receptors are sensory receptors found in the skin, and they detect various stimuli such as touch, pressure, temperature, and pain. These receptors are present in the dermis, which is the second layer of the skin located beneath the epidermis.
15.
Which receptor is sensitive to touch, pressure, pain, and temperature?
Correct Answer
B. Cutaneous receptor
Explanation
Cutaneous receptors are sensory receptors located in the skin that are sensitive to touch, pressure, pain, and temperature. They play a crucial role in detecting and transmitting these sensory stimuli to the brain for interpretation. These receptors are responsible for our ability to feel various sensations on our skin, such as the touch of an object, the pressure applied to our skin, the pain caused by an injury, and the temperature of our surroundings. Therefore, the cutaneous receptor is the correct answer for this question.
16.
Pain receptors are also called nociceptors.
Correct Answer
A. True
Explanation
Pain receptors are also known as nociceptors. Nociceptors are sensory neurons that are responsible for detecting and transmitting signals of pain to the brain. These specialized receptors are found throughout the body and are sensitive to various types of stimuli that can cause pain, such as heat, pressure, or chemicals. Therefore, the statement that pain receptors are also called nociceptors is true.
17.
Modified neurons that detect the smell.
Correct Answer
D. Olfacotary cells
Explanation
Olfactory cells, also known as olfactory receptor neurons, are modified neurons that detect smells. These cells are located in the nasal cavity and are responsible for detecting and transmitting signals related to different odors to the brain. When odor molecules enter the nasal cavity, they bind to receptors on the olfactory cells, triggering electrical signals that are then transmitted to the brain for interpretation. Therefore, olfacotary cells are the correct answer as they are specifically designed to detect smells.
18.
Produces tears.
Correct Answer
lacrimmal apparatus
Explanation
The lacrimal apparatus refers to the structures involved in producing tears. This includes the lacrimal glands, which secrete tears, and the lacrimal ducts, which carry tears from the glands to the surface of the eye. Tears are important for lubricating the eyes, keeping them moist, and flushing away foreign particles or irritants. Therefore, the lacrimal apparatus plays a crucial role in maintaining the health and function of the eyes.
19.
The transparent mucous membrane covers eye.
Correct Answer
conjunctiva
Explanation
The transparent mucous membrane that covers the eye is called the conjunctiva.
20.
Anchors eye moves the eye.
Correct Answer
extrinsic eye muscles
Explanation
The extrinsic eye muscles are responsible for moving the eye. These muscles are located outside of the eye and attach to the outer surface of the eyeball. They work together to control the movement of the eye in different directions, allowing us to look in different directions and track moving objects. Without the extrinsic eye muscles, our eyes would not be able to move and we would have difficulty seeing objects in our peripheral vision.
21.
Muscles relaxed, ligaments taut: lens flat.
Correct Answer
distant object
Explanation
When the muscles in the eye are relaxed and the ligaments are taut, it means that the lens is in a flat position. In this state, the lens is not curved, which allows the eye to focus on distant objects. This is because the flat lens does not bend the incoming light rays as much, allowing them to converge on the retina and form a clear image of the distant object.
22.
Muscles contracted ligaments lose: lense round.
Correct Answer
near object
Explanation
When the muscles in the eye contract, it causes the ligaments to relax. This relaxation allows the lens to become more rounded, which is necessary for focusing on near objects. Therefore, when the muscles contract and the ligaments lose, the lens becomes round, enabling clear vision of nearby objects.
23.
_____ are chemical signals between individual organisms.
Correct Answer
pheromones
Explanation
Pheromones are chemical signals that are used by individual organisms to communicate with each other. These signals are released into the environment and can be detected by other members of the same species, influencing their behavior or physiology. Pheromones can serve various purposes, such as attracting mates, marking territory, or signaling danger. They play a crucial role in social interactions and reproductive behaviors in many species, allowing individuals to coordinate their activities and communicate important information without direct contact.
24.
Caused by to little growth hormone during childhood perfect proportions but small.
Correct Answer
A. Pituitary dwarf
Explanation
The given correct answer is "pituitary dwarf." This term refers to a condition where an individual experiences stunted growth due to insufficient production of growth hormone during childhood. Despite having perfect proportions, individuals with pituitary dwarfism tend to be smaller in stature. This condition is caused by a dysfunction in the pituitary gland, which is responsible for producing and regulating growth hormone.