10 public questions tagged with this topic.
The sympathetic nervous system increases heart rate and inhibits digestion as part of the "fight or flight" response.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Sensory Organs - Ear - Structure and Physiology of Hearing and Balance
The vertebral column encases and protects the spinal cord, providing structural support.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Skeletal muscles are striated and under voluntary control.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Skeletal System - Axial Skeleton - Ribs Sternum
Cartilage provides cushioning and reduces friction between bones in joints.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Types of Movement - Amoeboid Ciliary Flagellar Muscular
The left ventricle pumps blood to the aorta, not the lungs. The right ventricle pumps blood to the lungs.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The pulmonary valve prevents backflow into the right ventricle, not the left ventricle.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The right atrium receives deoxygenated blood from the body via the superior and inferior vena cava, not oxygenated blood.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The lymphatic system does not transport respiratory gases. Oxygen and carbon dioxide are transported mainly by red blood cells and plasma.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Frogs lack external ears, but they have a tympanum for receiving sound signals.
Ref: NCERT Class 11 Biology Chapter 7: Structural Organisation in Animals Frog - Anatomy - Nervous System Sense Organs and Reproductive System
Frogs lack a diaphragm; they use buccal pumping to aid in respiration.
Ref: NCERT Class 11 Biology Chapter 7: Structural Organisation in Animals Frog - Anatomy - Digestive and Respiratory System
