Take Class 12 Tuition from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
Answered on 10 Apr Learn Chapter 22-Chemical Coordination and Integration
Sadika
(a) Hormones secreted by the Hypothalamus:
(b) Hormones secreted by the Pituitary Gland:
(c) Hormones secreted by the Thyroid Gland:
These hormones play crucial roles in regulating various physiological processes in the body, including growth, metabolism, reproduction, stress response, and calcium homeostasis.
Answered on 10 Apr Learn Chapter 22-Chemical Coordination and Integration
Sadika
An exocrine gland is a type of gland that secretes its products (such as enzymes, hormones, mucus, sweat, saliva, etc.) into ducts. These ducts then transport the secretions to specific target locations, either on the body's surface or into body cavities. Exocrine glands are found in various organs and tissues throughout the body and are involved in functions such as digestion, lubrication, protection, and temperature regulation. Examples of exocrine glands include salivary glands, sweat glands, sebaceous glands, mammary glands, and digestive glands (e.g., pancreas, liver).
Answered on 10 Apr Learn Chapter 22-Chemical Coordination and Integration
Sadika
An endocrine gland is a type of gland that secretes hormones directly into the bloodstream rather than through ducts. These hormones are chemical messengers that travel through the bloodstream to target cells or organs throughout the body, where they exert their effects by binding to specific receptors. Endocrine glands are involved in regulating various physiological processes and maintaining homeostasis by controlling functions such as metabolism, growth and development, reproduction, stress response, and electrolyte balance. Examples of endocrine glands include the pituitary gland, thyroid gland, adrenal glands, pancreas, gonads (testes and ovaries), and pineal gland.
Take Class 12 Tuition from the Best Tutors
Affordable fees Flexible Timings Choose between 1-1 and Group class Verified Tutors Answered on 10 Apr Learn Chapter 22-Chemical Coordination and Integration
Sadika
A hormone is a chemical substance produced by specialized cells or glands in the endocrine system that acts as a messenger to regulate various physiological processes in the body. Hormones are secreted into the bloodstream and travel to target cells or organs, where they bind to specific receptors and elicit a response. Hormones play a crucial role in coordinating and controlling numerous functions in the body, including metabolism, growth and development, reproduction, immune response, stress response, and electrolyte balance. They help maintain homeostasis by adjusting the activity of target tissues in response to changing internal and external conditions.
Answered on 10 Apr Learn Chapter 22-Chemical Coordination and Integration
Sadika
Hormones secreted by the ovary:
Hormones secreted by: (i) Thymus:
Atrium (Atrial):
Kidney:
Gastrointestinal Tract (G-I Tract):
Answered on 10 Apr Learn Chapter 21-Neural Control and Coordination
Sadika
Our perception of color is facilitated by specialized cells in the retina of our eyes called cones. Cones are sensitive to different wavelengths of light and enable us to perceive colors. There are three types of cones, each sensitive to specific ranges of wavelengths corresponding roughly to red, green, and blue light. When light enters the eye, it is absorbed by these cones, and the information is processed by the brain to generate our perception of color.
read lessTake Class 12 Tuition from the Best Tutors
Affordable fees Flexible Timings Choose between 1-1 and Group class Verified Tutors Answered on 10 Apr Learn Chapter 21-Neural Control and Coordination
Sadika
The part of the ear that determines the pitch of a sound is the cochlea. Specifically, the pitch of a sound is determined by the frequency of vibrations detected by hair cells along the basilar membrane of the cochlea. High-frequency sounds produce vibrations near the base of the cochlea, where the basilar membrane is narrow and stiff, while low-frequency sounds produce vibrations near the apex of the cochlea, where the basilar membrane is wider and more flexible. Thus, the cochlea acts as a frequency analyzer, with different regions of the basilar membrane responding preferentially to different frequencies of sound.
read lessAnswered on 10 Apr Learn Chapter 21-Neural Control and Coordination
Sadika
The cerebral cortex, particularly the neocortex, is the most developed part of the human brain. The cerebral cortex is a highly convoluted outer layer of gray matter that covers the surfaces of the cerebral hemispheres and is responsible for many higher-order brain functions, including sensory perception, motor control, language, memory, attention, reasoning, and consciousness. The neocortex, which is the outermost part of the cerebral cortex, is particularly well-developed in humans and is involved in complex cognitive processes characteristic of human intelligence and behavior.
read lessAnswered on 10 Apr Learn Chapter 21-Neural Control and Coordination
Sadika
The suprachiasmatic nucleus (SCN) of the hypothalamus acts as the master clock or central pacemaker of the circadian rhythm in humans. The SCN is a small group of cells located above the optic chiasm and receives direct input from the retina, allowing it to synchronize with the light-dark cycle of the external environment. The SCN generates endogenous rhythms with a period close to 24 hours, which serve to regulate various physiological and behavioral processes, including sleep-wake cycles, hormone secretion, body temperature, and metabolism. The SCN coordinates the timing of these circadian rhythms throughout the body, helping to maintain internal synchrony and adapt to environmental changes.
read lessTake Class 12 Tuition from the Best Tutors
Affordable fees Flexible Timings Choose between 1-1 and Group class Verified Tutors Answered on 10 Apr Learn Chapter 21-Neural Control and Coordination
Sadika
Afferent neurons, also known as sensory neurons, transmit sensory information from sensory receptors (such as those in the skin, eyes, ears, and internal organs) to the central nervous system (CNS). These neurons detect external stimuli (e.g., light, sound, touch, taste, smell) and internal stimuli (e.g., temperature, pain, pressure) and convey this information to the CNS for processing and interpretation. Efferent neurons, also known as motor neurons, transmit motor commands from the CNS to muscles and glands, initiating appropriate responses. These neurons carry signals that control muscle contraction (motor output) and glandular secretion in response to stimuli. In summary, afferent neurons transmit sensory information to the CNS, while efferent neurons transmit motor commands from the CNS to muscles and glands.
read lessUrbanPro.com helps you to connect with the best Class 12 Tuition in India. Post Your Requirement today and get connected.
Ask a Question
The best tutors for Class 12 Tuition Classes are on UrbanPro
The best Tutors for Class 12 Tuition Classes are on UrbanPro
213,851 
